~iany/ Journals

What I Touched This Week 2026-03-30

me@iany.me (Ian Yang) — Mon, 30 Mar 2026 00:00:00 +0000

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Convincing vs Persuading in Technical Work

This week sharpened a useful distinction: being correct is only the starting point, while moving a system or a team requires persuasion tuned to real context. That frame maps directly to architecture work, migration plans, and cross-team decisions.

Convincing Is Not Persuading highlights that proof and benchmarks convince, but adoption depends on trust, timing, and incentives.
The practical takeaway is to pair correctness with audience-aware framing: what this change protects, what risk it removes, and what people can safely do next.

Scale-First AI Thinking and Mental Models

The Readwise set this week converged on a coherent AI posture: favor general methods that scale with compute, then use explicit mental models to reason about systems and constraints.

The Bitter Lesson reinforces a long-run strategy: approaches that scale with computation and learning tend to dominate handcrafted knowledge-heavy systems.
TLA+ Mental Models contributed a systems lens (state, logs, replication) that is useful for evaluating reliability claims, not just feature velocity.
This combination was a good backbone for AI reflection this week: keep abstractions general, but reason rigorously about behavior under change.

Boring Tech, Better Practices, and Tooling Leverage

A recurring theme across highlights and bookmarks was pragmatic leverage: pick stable tools, then innovate in process, automation, and integration points.

Choose Boring Technology and Innovative Practices captures the principle well: conservatism in stack choice enables boldness in operational practice.
Recent bookmarks aligned with this approach, including RustTraining, Saber, and monitor-switch automation via monctl.js.
Weekly hygiene (bookmark triage, highlights cleanup, sync routines) made this strategy actionable rather than theoretical.

Obsidian Links

What I Touched This Week 2026-03-21

me@iany.me (Ian Yang) — Sat, 21 Mar 2026 00:00:00 +0000

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Software Maintenance and the Specification Problem

Scott Werner’s “Warranty Void if Regenerated” explores why software needs continuous tending, not just initial development. The core insight: specifications describe static relationships, but real-world inputs are alive—feeds from other systems that are constantly being updated, recalibrated, and regenerated.

The maintenance paradox: Paying for maintenance means admitting vulnerability, while paying for repair means responding to an emergency. Humans find emergencies more motivating than vulnerabilities.
Domain knowledge is irreplaceable: People who understood the domain and could diagnose specification problems were the most valuable. This knowledge is often embodied, contextual, and inarticulable—like knowing the clay underneath a greenhouse or how prevailing winds affect crop rows.
The Software Choreographer concept: A role that maps your entire tool ecosystem, specifies interfaces between them, and builds a conformance layer so that when any tool regenerates, interfaces are verified before the new version goes live. Like shipping containers: the container was cheap; organizing the logistics was where all the value was.
Physical controls matter: Always offer a physical control—a button, switch, or lever. Something the client can touch. This builds trust and allows graceful degradation when systems fail.

AI Agents and the Harness

Ben Thompson’s “Agents Over Bubbles” argues that the critical component of making agentic workloads work is the “harness”—the software that actually controls the model, not the model itself.

Abstraction layer: Claude Code and OpenAI’s Codex abstract the user away from the model. You give instructions to an agent, which directs the model; the agent can also use deterministic tools to verify results.
Models lack goals: Large language models are intelligent, but they do not have goals or values or drive. The harness provides the structure and verification.
The opportunity: How many apps or services haven’t been built, not because one person can’t imagine them, but because they haven’t had the resources, team, or coordination capabilities to ship them? Agents could change this dynamic.

Simplifying Life Through Lifestyle Design

The Tim Ferriss Show episode on simplifying life brought together insights from Maria Popova, Morgan Housel, Cal Newport, Craig Mod, and Debbie Millman on what it means to simplify.

Read history, not forecasts: A good heuristic for your relationship with information is to read more history and fewer forecasts. As Kelly Hayes says, “When you haven’t engaged with history, everything feels unprecedented.”
Lifestyle design over triage: Cal Newport argues that triage rules don’t work—too many things satisfy “good enough” criteria. Instead, think about lifestyle design: know what conditions of your day-to-day existence are best for you, and design a lifestyle that matches that.
Courage over confidence: Debbie Millman distinguishes courage from confidence. Courage means taking risks and steps toward what you want despite how you feel. Confidence comes through repeated success. You don’t wait for confidence to arrive; you act from courage.
Freedom over control: What Millman wanted wasn’t more control, but more freedom. That freedom has allowed her to build a very different kind of life.
Simplicity as coherence: Simplicity isn’t only about minimalism. It’s also about coherence—things fitting together in a way that makes sense.

Sources:

Obsidian Links

What I Touched This Week 2026-02-07

me@iany.me (Ian Yang) — Sat, 07 Feb 2026 00:00:00 +0000

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Haskell: Typeclassopedia, IO, and Documentation

This week was heavily Haskell-focused. I worked through the Typeclassopedia, Learn You a Haskell Chapter 9 (Input and Output), and Real World Haskell Chapter 7 (IO), plus the Haddock markup guide.

Monad vs Applicative: The structure of an Applicative computation is fixed; a Monad’s structure can depend on intermediate results. That’s why (>>=) (bind) is strictly more powerful than (<*>). Prefer Applicative when you don’t need that—it can allow parallelization where monadic code cannot.
Reader, Writer, State: The (->) e reader monad gives a read-only environment; Writer accumulates a monoidal log; State s a is s -> (a,s) for stateful computations. All live in Control.Monad and the mtl library.
IO in practice: getContents does lazy I/O; interact captures the pattern of “read, transform, output.” Use withFile for handle-based file I/O. Prefer Maybe/Either in pure code and reserve exceptions for the IO part; catch with System.IO.Error.catch and predicates like isDoesNotExistError.
Haddock: Use -- | before or -- ^ after declarations; document arguments inline. Headings with -- *, -- **; link identifiers with single quotes/backticks and modules with double quotes; code blocks with @...@ or bird tracks >.

Use Bun for Shell Scripts

I published a post on using Bun for cross-platform shell scripts on Windows. Bun avoids shebang and WSL/Git-bash setup while giving a single runtime for ad-hoc commands and full scripts.

Single binary: bun build ./script.ts --compile --outfile script produces a native executable, so no shebang or interpreter is needed on Windows.
Bun Shell: Bun.$ builds shell commands from template literals (similar to zx). On Windows, Bun ships with MSYS for a consistent bash environment.
Extras: Bun.secrets for the OS keystore, built-in globs, YAML, ANSI. Fast startup (~5ms vs Node’s ~25ms for simple scripts) helps for small, frequent scripts.

Sources:

How I Estimate Work

Sean Goedecke’s post reframes estimation as a political and constraint-satisfaction problem rather than a pure “how long will this take?” question.

Context first: Gather political context before looking at code—pressure on the project, what kind of estimate the chain wants, whether this is a casual ask or a must-have.
Inversion: The job isn’t “break down work to get a duration.” It’s “find the set of software approaches that fit the timeline they already have in mind.”
If you don’t estimate: Someone less technical will estimate for you. Engaging with the process lets you steer which approaches are in scope.

Obsidian Links

What I Touched This Week 2026-02-01

me@iany.me (Ian Yang) — Sun, 01 Feb 2026 00:00:00 +0000

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Haskell Type Classes: Functors, Applicatives, and Monoids

This week I dove deep into Haskell’s type class hierarchy, working through Learn You a Haskell and the CIS 194 course materials. The key insight is understanding how these abstractions compose to enable powerful, generic programming.- Functors are types that can be mapped over. The fmap function can be viewed as “lifting” a function: fmap :: (a -> b) -> (f a -> f b) transforms an ordinary function into one that works inside a functor context

The functor laws ensure predictable behavior: fmap id = id (identity preservation) and fmap (f . g) = fmap f . fmap g (composition preservation)
Applicatives extend functors by allowing wrapped functions to be applied to wrapped values using <*>. Lists as applicatives represent non-deterministic computations where [(+3),(*2)] <*> [1,2] produces all combinations
ZipList provides an alternative applicative instance for lists using pairwise application instead of all combinations
Monoids provide an identity element (mempty) and an associative binary operation (mappend). The foldMap function reveals why monoids matter: the identity handles empty structures and the associative operation combines values reliably
Use foldl' from Data.List instead of foldl to avoid building huge thunks; foldr is better when the folding function can short-circuit

Sources:

Using tmux for PowerShell in Windows Terminal

I published a blog post on getting tmux session persistence in Windows Terminal while keeping PowerShell as the default shell. The solution runs tmux through WSL but configures it to spawn pwsh.exe for new panes.

Create thin wrapper scripts (tmux.ps1, tmux.cmd) so tmux from Windows means wsl tmux
A helper script tmux-pwsh.ps1 creates or attaches to named sessions with pwsh.exe -nologo as the default command
The key trick: send set-option default-command via tmux -C attach because running wsl tmux set-option immediately after session creation has a race condition where the session isn’t ready
After setup, splitting panes and creating windows in that session will all start PowerShell in the Windows environment

Elite Performance Through Preparation

An insightful thread by Sandeep Palakodeti on what separates elite performers from amateurs. The core message: greatness is not about taking risks but eliminating variance through preparation.

When experts operate at their limit, they’re not “trying hard”—they’re executing scripts that have been debugged for decades through deliberate, high-fidelity repetition
Fear is the biological response to the unknown; when you’ve accounted for every variable, fear is replaced by focus
Elite performers aim below the edge of their ability because that’s where consistency lives
Every question gets answered upstream, every branch point gets a playbook—by the time the moment arrives, they’re executing state changes, not solving problems
“Don’t worship the risk. Worship the work that made the risk irrelevant.”

Obsidian Links

What I Touched This Week 2026-01-24

me@iany.me (Ian Yang) — Sat, 24 Jan 2026 00:00:00 +0000

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Erlang State Machine Patterns in Rust

This week I created a presentation exploring how to implement Erlang OTP’s gen_statem patterns in Rust using Tokio. The core insight is that Erlang’s behavior pattern separates the engine (state machine framework) from the callback (state-specific logic), following the strategy pattern.

The fundamental state transition follows: State(S) × Event(E) → Actions(A), State(S')
Erlang’s “everything is an event” philosophy means state entry, timeouts, and internal messages are all unified as events
The enter event triggers when entering a new state, useful for running initialization logic without duplicating code across multiple transition paths
Postpone action defers events to a later state when we can’t process them yet
Timeout actions come in three flavors: event timeout (cleared on any event), state timeout (cleared on state change), and named timeout (manual clearing)
Inserted events enable preprocessing and state machine composition

The code examples progressively build from basic process simulation to full-featured state machines with all these capabilities.

BFT Consensus Protocol Comparisons

I studied the differences between PBFT, Tendermint, HotStuff, and HotStuff-2. These are all safety-preferring protocols where locked parties guard the safety of a potential commit. The key questions each protocol answers are:

What does the leader learn about system status at the start of a view?
How does the leader convince other parties about system status to get votes?

Among 2t+1 locks in a status response, up to t can be malicious, up to t can be honest but not locked on the committed value, but at least one honest party must be locked on the committed value. This honest party won’t vote for conflicting proposals, thus guarding commit safety.

HotStuff introduces an additional phase: “if some party locks, then ≥2t+1 parties know about this lock and hold a key corresponding to it.”

Sources:

What is the difference between PBFT, Tendermint, HotStuff, and HotStuff-2 by Kartik Nayak and Dahlia Malkhi
Provable Broadcast by Ittai Abraham and Alexander Spiegelman

CKB Virtual Transactions

I explored a design for implementing partial transactions in CKB through “Virtual Tx.” The approach mocks system calls so scripts access the virtual tx instead of the real current transaction.

Override syscalls in ckb-c-stdlib or ckb-std to redirect to virtual tx data
Anyone can be economically incentivized to match partial txs since fees can be provided
Use a special first input as the indicator that the tx is a vtx
The first input’s type script witness specifies how each vtx maps to tx components (inputs, outputs, etc.)
Inputs/outputs are handled exclusively, with mechanisms to tackle cell/header deps duplication

Obsidian Links

What I Touched This Week 2026-01-17

me@iany.me (Ian Yang) — Sat, 17 Jan 2026 00:00:00 +0000

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Temporal Patterns and Bitemporality

This week I explored the concept of bitemporality and temporal patterns in data modeling. The key insight is that we need to track two dimensions of time: actual time (when something happened) and record time (when we learned about it). This becomes crucial when we need to answer questions like “what did we think the state was two months ago?” or “what did we know six months ago about something that happened earlier?”

Sources:

One for the Treble, Two for the Time by Lewis Daly
Temporal Patterns by Martin Fowler

Go Performance Optimization Techniques

I learned several advanced Go performance optimization techniques from VictoriaMetrics, a high-performance time-series database. The key strategies include using sync.Pool for object reuse to reduce GC pressure, implementing channel-based object pools for more controlled resource management, and using sharding to reduce lock contention by splitting large data structures into independent shards.

Use sync.Pool for object reuse to minimize garbage collection overhead
Channel-based object pools provide more control than sync.Pool
Sharding large data structures reduces lock contention
Localized worker pools with independent channels improve multi-core scalability
Buffered channels can serve as semaphores for rate limiting

Source: 从入门到极致：VictoriaMetrics 教你写出最高效的 Go 代码 by Tony Bai

JDK Selection Guidelines

I reviewed best practices for choosing a Java Development Kit (JDK) version and distribution. The primary recommendation is to use Adoptium Eclipse Temurin 21.

Source: Which Version of JDK Should I Use by Jochen Christ

Obsidian Links

What I Touched This Week 2026-01-10

me@iany.me (Ian Yang) — Sat, 10 Jan 2026 00:00:00 +0000

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Learning C23: Going Behind the Curtain of Modern Systems

This week I dove deep into Paul J. Lucas’s book on learning C23, which provides a comprehensive tour of the latest C standard and why understanding systems programming at this level matters. With 133 highlights, this was clearly a major focus of my learning.

Modern C Features: C23 introduces many modern conveniences like bool, nullptr, constexpr, auto, typeof, and compound literals. The language is evolving while maintaining its core philosophy of being “close to the machine.”
East const Convention: A stylistic choice where const is placed to the right (east) of the type, making pointer declarations more readable when reading from right to left. This consistency helps with complex pointer declarations.
Type System Enhancements: New types like _BitInt for bit-precise integers, decimal floating types (_Decimal32, _Decimal64, _Decimal128), and complex number support show C’s continued evolution for specialized use cases.
Practical Systems Understanding: The book emphasizes that C was designed to work directly with machine details—understanding memory layout, alignment, and how data structures map to hardware is still valuable even when working in higher-level languages.

This connects to my broader interest in understanding how modern systems work under the hood, especially as I work with distributed systems and blockchain technology where performance and correctness matter deeply.

Time Management and Reflective Living

Arnold Bennett’s classic How to Live on 24 Hours a Day offers timeless wisdom about making the most of our daily time budget. The key insight is that we already have all the time there is—the challenge is how we use it.

The Inner Day: Bennett suggests dedicating 7.5 hours per week (about 90 minutes per evening) to cultivating your mind. This “inner day” should begin at 6 p.m. and end at 10 a.m., separate from your workday.
The Reflective Mood: What’s most lacking in modern life is the reflective mood—taking time to examine conduct against principles, to think deeply rather than just consume information. The solitude of the evening commute is perfect for this.
Slow, Deep Reading: When reading for cultivation, give at least 45 minutes to careful, fatiguing reflection on what you’re reading. Your pace will be slow, but that’s the point—the good stuff rises up to meet you in the extra time you give it.
Topic Reading with Limits: Choose a limited period, subject, or single author. Define the direction and scope of your efforts rather than reading aimlessly. Forget the goal; think only of the surrounding country, and you’ll find yourself in a lovely town on a hill.

This resonates with my experience that slowing down often yields better results than rushing, whether in reading, coding, or thinking through problems.

Formal Methods: Exploring Quint and TLA+

I’ve been exploring formal specification languages, particularly Quint, which provides a more accessible syntax for writing formal specifications compared to TLA+. This connects to my interest in distributed systems and ensuring correctness.

Quint’s Design Philosophy: Quint restricts the prime operator (') to assignments in the format <var>' = <expr>, preventing hard-to-grasp expressions while maintaining the power of temporal logic. The tooling reports errors if you misuse ' or forget to update variables in some branches.
State Machine Modeling: Actions named init and step define the state machine—init defines initial states, step defines transitions. This makes the model structure clear and checkable.
Pure Functions and Actions: Definitions prefixed with pure are functional—same input always produces same output. Actions use the prime operator to modify state. This separation helps reason about what changes state and what doesn’t.
Non-determinism: Quint supports non-deterministic definitions using any and oneOf, which can only be used inside actions before assignments. This is crucial for modeling systems with multiple possible behaviors.

The connection to TLA+ is clear—both are tools for specifying and verifying system behavior, but Quint’s more familiar syntax might lower the barrier to entry for formal methods. This is particularly relevant as I work on systems where correctness is critical.

Obsidian Links

What I Touched This Week 2026-01-03

me@iany.me (Ian Yang) — Sat, 03 Jan 2026 00:00:00 +0000

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Training the Idea Muscle: Quantity Over Quality

This week I came across a fascinating article about training the idea muscle that perfectly captures a principle I’ve been trying to internalize: if you reject your own ideas, the part of the brain that generates them will simply stop producing.

Never Reject During Generation: The key insight is to generate ideas continuously without filtering them in the moment. You sort them out later. This is similar to the Creativity Faucet concept—you need to let the bad ideas flow out first before the good ones emerge.
Do It While Learning: “I don’t think I’ve ever done anything I’m not good enough to do because I get good at the thing while doing it.” This reframes the common fear of not being ready—you become ready by starting.
Fun as the Filter: Only work on things you think are fun. This is the real filter, not whether you’re “good enough” or whether the idea is “good enough” initially.
Ideas Require Action: Ideas are everywhere, but most people don’t act on them. The muscle being trained isn’t just idea generation—it’s the habit of execution.

This connects beautifully with The Motern Method, a book about an artist who released 23,000+ songs by embracing quantity and rejecting perfectionism.

Slowing Down to Go Deeper

David Cain’s article on default settings being too high offers a counterintuitive productivity insight: slowing down often yields better results than rushing.

Reading Aloud: Limiting yourself to mouth-speed rather than eye-speed prevents rushing through text, missing important details, and losing interest. If you’re enjoying something, why would you want to be done with it sooner?
The Vacuum Analogy: Passing a vacuum too quickly over carpet means you miss half the dirt. Slow down, and you can hear how much more grit gets picked up. The same applies to reading and eating—the good stuff (meaning in text, pleasure in food) rises up to meet you in the extra time you give it.
Quality Over Speed: This challenges the default assumption that faster is better. Sometimes our cultural “default settings” for speed are calibrated too high for actual comprehension and enjoyment.

This resonates with my experience using AI tools—the temptation is to go faster, but often the value comes from slowing down and engaging more deeply with the material.

Learning Tacit Knowledge: Copying Better

Cedric Chin’s piece on acquiring tacit knowledge from experts provides a practical framework for learning skills that can’t be easily articulated.

Four Key Elements: When observing experts, focus on their cues (what they notice first), expectancies (what they expect to happen next), goals (their priorities), and actions (courses of action that immediately come to mind).
Prototypes vs. Options: Experts rarely compare multiple options—they pick the first available option that fits their criteria because they’ve built up mental prototypes. If you find yourself doing option comparison in a situation where a colleague doesn’t, that’s a signal they have a prototype you lack.
Narrative Construction: Experts construct narratives or simulations to explain what they’re seeing, matching patterns against different prototypes. This is fundamentally different from following explicit rules.

This framework is particularly relevant for software engineering, where so much expertise is tacit—knowing when to refactor, which abstractions to choose, how to structure systems. These aren’t things you can learn from documentation alone.

Obsidian Links

What I Touched This Week 2025-12-27

me@iany.me (Ian Yang) — Sat, 27 Dec 2025 00:00:00 +0000

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State Machines for Simplifying Complex Logic

This week I dove into using state machines as a tool for managing complex application logic. Dave Thomas’s approach in his book “Simplicity” resonated with me: state machines aren’t as complicated as people make them out to be, and they’re a great way of turning deeply nested code into nice linear chunks.

Data Over Code: The core insight is that data is easier to work with than code—it’s easier to reason about, manipulate, and change. You don’t need complex libraries or long-winded pattern-based approaches when you need a state machine; all you need is a lookup table.
State Transition Formula: The fundamental model is State(S) x Event(E) -> Actions(A), State(S'). This simple formula captures the essence of event-driven behavior in a declarative way.
Event Generation: Actions can return either new state values or generate new events. If an event is returned, the code immediately performs another transition—this allows for elegant chaining of state changes.
State Enter Calls: Erlang’s gen_statem has a powerful feature where the state callback is automatically called with special arguments whenever the state changes, making it easy to perform entry actions without cluttering transition logic.
Postponing Events: A clever pattern is the ability to postpone events—if an event arrives but shouldn’t be handled in the current state, you can defer it until a state change occurs when the event queue restarts from the oldest postponed event.

Sources:

Tokio and Async Rust Patterns

Continuing my study of async Rust, I worked through the Tokio tutorials and explored patterns for shared state and concurrent data structures.

Mutex Selection: As a rule of thumb, using a synchronous mutex from within asynchronous code is fine as long as contention remains low and the lock is not held across calls to .await. The Tokio mutex’s primary feature is that it can be held across an .await without issues, but if contention becomes a problem, the best fix is rarely to switch to the Tokio mutex.
Concurrent Hash Maps: For high-contention scenarios, there are several excellent crate options: dashmap provides a sharded hash map implementation, while leapfrog uses leapfrog probing, and flurry is a port of Java’s ConcurrentHashMap. I also discovered papaya, which is optimized for read-heavy workloads.
Async Trait Variants: The trait_variant and dynosaur crates help with async trait patterns—useful for creating both sync and async versions of traits without code duplication.
Testing with tokio-test: The tokio_test::io::Builder provides mock I/O for testing async code, making it easier to write deterministic tests for network protocols.

Source: Tokio Tutorial - Shared State

Clean Code: Maintenance as the Core of Software

I revisited Robert C. Martin’s “Clean Code” this week, and the framing around maintenance struck me differently in the AI era.

80% is Maintenance: In software, 80% or more of what we do is “maintenance”—the act of repair. Rather than the Western focus on producing good software, we should think more like home repairmen or auto mechanics: proactive maintenance rather than waiting for bugs to surface.
A Million Selfless Acts: Quality is the result of a million selfless acts of care—not just of any great method that descends from the heavens. These acts are simple but not simplistic, forming the fabric of greatness in any human endeavor.
Reading vs Writing Ratio: The ratio of time spent reading vs. writing code is well over 10:1. We are constantly reading old code as part of the effort to write new code, so making code easy to read actually makes it easier to write.
LeBlanc’s Law: “Later equals never.” We’ve all felt the relief of seeing our messy program work and deciding that a working mess is better than nothing, promising to clean it up later. This resonates especially with vibe-coded AI-generated solutions.
The Boy Scout Rule: Leave the campground cleaner than you found it. Small continuous improvements compound over time.
Clean Code Characteristics: Clean code reads like well-written prose, never obscures the designer’s intent, and is full of crisp abstractions and straightforward lines of control. It should make you smile the way a well-crafted music box or well-designed car would.

Source: Clean Code by Robert C. Martin

Obsidian Links

What I Touched This Week 2025-12-20

me@iany.me (Ian Yang) — Sat, 20 Dec 2025 00:00:00 +0000

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The Ladder of Abstraction in System Design

Bret Victor’s “The Ladder of Abstraction” explores how to design interactive systems by moving between levels of abstraction. The core insight is that the most powerful way to gain insight into a system is by stepping up and down the ladder—abstracting over variables to see high-level patterns, then stepping down to concrete representations to understand the details.

Abstracting Over Time: Instead of watching a system evolve in real-time (which is limiting, like a film editor who can’t pause or rewind), we can abstract over time by turning time into a parameter. This creates a trajectory—a function that returns a point for any given time, showing the system’s behavior across all time values.
Stepping Up and Down: We step up to an abstraction by devising a representation that depicts the system across all values of a parameter. We step down by interactively selecting one particular value, allowing us to explore regions of interest quickly. This corresponds to partial application in functional programming.
Visual vs. Symbolic Abstractions: The human brain excels at pattern matching with visual patterns but struggles with logical inferences. Visual abstractions leverage our natural strengths, making it easier to see high-level patterns and tune out low-level clutter.
Metrics and Patterns: By choosing metrics—numbers that summarize system behavior in interesting ways—we can step up another level of abstraction. For example, plotting time to completion versus turning rate reveals patterns that aren’t visible in individual trajectories.
Starting Simple: Beginning with the simplest possible algorithm and thoroughly exploring it helps us understand why and how it’s terrible, providing the foundation for better solutions. The tools we build for simple cases continue to serve us throughout the design process.

Source: The Ladder of Abstraction

AI Investment Bubble and Infrastructure Economics

Howard Marks examines whether AI is experiencing a financial bubble, distinguishing between technological hype and actual market bubbles. His analysis reveals the complex economics of AI infrastructure investment and the risks of debt-financed expansion.

Bubbles vs. Technological Progress: Market bubbles aren’t caused directly by technological developments but by excessive optimism applied to those developments. However, Marks notes that “inflection bubbles” based on revolutionary developments can accelerate technological progress while still destroying wealth—they’re both collective delusions and expressions of collective vision.
The Compression Effect: If people remained patient and value-insistent, novel technologies would take decades to build out. The hysteria of bubbles compresses this process into a short period, with some money going to life-changing investments in winners but a lot being incinerated.
Circular Capital Flows: OpenAI receives billions from tech companies but also sends billions back to pay for computing power. Nvidia’s $100 billion investment in OpenAI flows back as the startup buys or leases Nvidia’s chips, creating circular capital flows that raise questions about actual value creation.
Debt-Financed Expansion: Major tech companies (Oracle, Meta, Alphabet) have issued 30-year bonds to finance AI investments. With close to half a trillion in expected spending next year but only $350bn collectively in the bank, heavy debt usage creates risks of overcapacity and depressed returns.
The Scale of Trillions: A trillion dollars is a dollar a second for 31,700 years—a scale that’s difficult to comprehend but represents the magnitude of AI infrastructure investment being discussed.

Source: Is It A Bubble

Becoming AI-Native in Daily Workflows

Jeff Su’s video provides practical strategies for integrating AI into daily work, moving beyond simple prompting to building sustainable AI-native workflows that anchor conversations, leverage swipe files, and strategically allocate tasks between AI and manual work.

Anchoring Important Conversations: If an AI conversation takes more than 10 minutes or produces something you’ll reference again, anchor it to your workspace immediately. This creates a searchable archive of valuable AI interactions and outputs.
AI Swipe Files: Create a dedicated folder for good examples—business proposals, code patterns, writing samples—that AI can reference. Instead of starting from scratch, you open your swipe folder to find examples that guide AI toward the quality and style you want. This acts as a curated reference library for AI.
Task Breakdown and Allocation: Before writing anything, break work into steps and microtasks. Then decide whether each microtask should be done manually or with AI, and specify the exact tool best suited for that task. For projects taking more than an hour, spend 5-10 minutes mapping steps and tagging which are AI or manual.
Battle-Tested Prompts: You don’t need a thousand random prompts—you need 10-15 battle-tested ones that you can use every day. Focus on quality and refinement rather than quantity.

Sources: Give Me 9 Minutes, I’ll Make You AI-Native

Obsidian Links

What I Touched This Week 2025-12-13

me@iany.me (Ian Yang) — Sat, 13 Dec 2025 00:00:00 +0000

This journal is generated by AI

This week I dove deep into Pieter Hintjens’ “Social Architecture,” a comprehensive guide to building sustainable open source communities. The book provides a framework for understanding how successful communities function, with direct relevance to my work on CKB Fiber and other open source projects.

The C4 Process: An evolution of the GitHub Fork + Pull Model that emphasizes problem-first thinking. All patches must start by identifying a clear problem before proposing solutions. This creates a culture where contributors focus on real needs rather than speculative features.
Optimistic Merging: Maintainers should merge patches rapidly, even if imperfect. This creates opportunities for mentoring—when a patch needs work, other contributors naturally step in to help, building relationships and improving code quality through collaboration rather than gatekeeping.
Free Entry and Non-Tribalism: Successful communities welcome competition and experimentation. If starting a competing project gets a negative emotional response, the group is too tribal. Healthy communities applaud new competitors as spaces for learning and innovation.
The 20 Principles: From strong mission and transparency to minimalism and sense of humor, Hintjens identifies key characteristics of thriving communities. Particularly resonant: “Perfection precludes participation”—releasing buggy, half-finished work provokes contributions more effectively than polished releases.
Economic Incentives: We’re economic animals, and architecture must provide economic incentive to invest. Whether it’s reputation, money, or skill development, contributors need clear value propositions. Think of architecture as a marketplace, not just an engineering design.

Source: Social Architecture

AI-Assisted Development and Learning

Multiple articles this week explored how to effectively use AI as a development and learning partner, moving beyond simple code generation to more sophisticated workflows.

Learning with AI: Scott Young emphasizes using AI for book recommendations and practice problem generation rather than summaries. AI tutoring works better than teaching because specific questions constrain answers more effectively. For repetitive learning tasks, building applications can be more consistent than repeated prompting.
Agent Design Challenges: Armin Ronacher highlights that differences between models are significant enough that you’ll likely need custom abstractions. Key insights include using static system prompts with dynamic messages for caching, and hiding execution failures from context by running potentially failing tasks in subagents until they succeed.
CLAUDE.md Best Practices: Kyle Mistele recommends keeping CLAUDE.md under 300 lines (ideally under 60), with task-specific instructions in separate markdown files. Most importantly: “Never send an LLM to do a linter’s job”—use deterministic tools whenever possible since LLMs are expensive and slow compared to traditional tooling.

Additionally, Ed sent me an email to introduce his app, Grasp, which I found impressively aligned with these best practices and strategies from the past two weeks’ articles.

Sources:

Git Workflow Improvements

I published a blog post about backing up ignored files using Git remote branches, solving a problem I’ve had for years. The solution uses Git’s low-level plumbing commands to store ignored files (like local configs, IDE settings, or personal scripts) in a separate remote branch without affecting the main branch or working directory.

The Problem: Files that need backup but shouldn’t be in main branch history—local development settings, IDE configurations, personal notes, or workflow-specific scripts.
The Solution: A git-store-file script that uses a temporary Git index to commit ignored files to a remote branch (default: origin/_store). This keeps everything in one repository while maintaining clear separation.
Technical Approach: Uses GIT_INDEX_FILE for isolated index manipulation, git read-tree to load branch state, git add -f for ignored files, and git commit-tree for direct commit creation—all without touching the working directory.

Source: ♯ Backup Ignored Files with Git Remote Branch

Obsidian Links

What I Touched This Week 2025-12-06

me@iany.me (Ian Yang) — Sat, 06 Dec 2025 00:00:00 +0000

This journal is generated by AI

Fuzzing Strategies from TigerBeetle

This week I dove deep into TigerBeetle’s fuzzing philosophy through several articles by Aleksey Kladov. The collection reveals a systematic approach to building testable systems from the ground up.

Design for Fuzzability First: You don’t build a system and then add a fuzzer—the process is almost reversed. Start by sketching minimal interfaces that yield themselves to efficient fuzzing. Minimize the interface by eliminating accidental dependencies and leaving only essential ones.
Data-Oriented Design: Apply data-oriented design principles—think in terms of input data, output data, and the fundamental data transformation the system implements. This makes the code more easily fuzzable.
Four Fuzzer Strategy: Use multiple fuzzing approaches: (1) positive space fuzzing with ideal lab environments to verify correctness, (2) negative space fuzzing calling all public methods in random order to break things, (3) boundary testing for valid vs. almost-valid-but-invalid codes, and (4) whole subsystem fuzzing.
Randomness in Tests: Don’t always use hard-coded seeds. Zig’s approach is best—provide std.testing.random_seed that’s different per run but generated outside the test process. Run tests twice: once with a hard-coded seed for regression testing, and once with a truly random seed for coverage.

Sources:

Lightning Network Mobile Nodes and Self-Custody

Stephen DeLorme’s article on Lightning self-custody and mobile nodes provided valuable insights into the future of Bitcoin payments, with direct relevance to my work on CKB Fiber.

Mobile Receiving Nodes: For receiving-only nodes, you don’t need routing, meaning you don’t need all that database storage. This was pioneered by projects like Breez, Phoenix, Mutiny wallet, Blixt, and newer versions of Zeus.
Offline Payments Problem: Even the sharpest performing mobile lightning wallets suffer from a lack of offline payments, which has severely tarnished the perception of Lightning. BIP-353 user names distributed via DNS and recent LDK PRs for async payments are addressing this.
Capital Efficiency: Splicing is a powerful tool for easing capital constraints for LSPs. The option_zero_reserve allows channel partners to choose not to use a channel reserve balance—great for UX, though it requires solving minimal capacity restrictions (relevant for CKB Fiber).
Graduated Wallet Model: A wallet that begins with a custodial service or trust-minimized technology, then graduates to a Lightning channel when the balance grows to a certain threshold. This helps LSPs avoid opening “non-productive” channels to users just experimenting with the app.
Dust Limit Considerations: Amounts below the dust limit (like a 21 sat Nostr zap) wouldn’t be claimable on-chain anyway, suggesting alternative approaches for micro-transactions.

Source: Lightning Self-Custody Works: Why Mobile Nodes Are the Future of Bitcoin

Think First, AI Second

Ines Lee’s article on using AI as a thinking partner rather than a solution generator resonated deeply with my own experience using AI tools.

Active vs. Passive AI Use: Active AI use means building understanding while collaborating with the model. Frame the problem yourself, make an initial pass, then use AI to challenge assumptions, uncover blind spots, and sharpen arguments. Studies show this approach maintains cognitive engagement even while using AI.
AI as Coach, Not Cheerleader: Shift AI from talking to you about your work (where it’s sycophantic) to talking to other editors about your work (where it’s professionally candid). You’re no longer the audience, so it drops the protective politeness.
Combat Illusion of Understanding: AI explains things in ways that are easy to follow, making us susceptible to the “illusion of understanding.” We overestimate what we’ve learned. Real comprehension emerges when forced to articulate thinking, because explaining reveals gaps we didn’t know existed.
Practical Prompts: Use prompts like “Ask exactly 5 high-leverage questions before proposing solutions,” “Act as an editor recommending whether to publish this piece,” “Analyze my reasoning and create an architecture of my thinking,” “Switch to devil’s advocate mode and dismantle my thesis,” and “Ask me to explain this as if teaching it to someone else.”

Source: Think First, AI Second

Obsidian Links

What I Touched This Week 2025-11-29

me@iany.me (Ian Yang) — Sat, 29 Nov 2025 00:00:00 +0000

This journal is generated by AI

Software Design Insights from TigerBeetle

This week I went deep into several articles from Alexey Kladov (matklad) and TigerBeetle’s engineering blog. The collection offers practical wisdom on building robust systems.

Code Review Workflow: Instead of reviewing diffs in a web UI, pull the branch locally, soft-reset to the base, then navigate through the diff using magit. Use the git staging area to mark files you’ve reviewed—treating the review process like authoring the code yourself.
Clockless Time Tracking: Rather than injecting a Clock dependency, push time into the system at fixed cadence via a tick method. For single-instant needs, use Call Site Dependency Injection by passing now: Instant directly to methods.
Write Last, Read First: When dealing with systems of record (source of truth) and systems of reference (derived data), write to the system of reference first, then write to the system of record last. Read in reverse order. This maintains application-level consistency.
Function Shape Matters: Functions should have an “inverted hourglass” shape—large implementations relative to their interfaces. Hourglass-shaped functions (small body, large interface) are a code smell. The 100-column limit exists so you can fit two files side-by-side on modern displays. Functions should fit on a screen (~60-70 lines).

Sources:

Self-Consistency Over Self-Discipline

An essay on achieving a good life without rigid self-discipline (“谈谈不自律的良好生活”) resonated with me this week. The author argues for balance over brute-force willpower.

Balanced Love: Drawing from Fromm’s The Art of Loving, healthy self-regard requires combining unconditional and conditional love. Pure unconditional love becomes indulgence; pure conditional love becomes self-attack.
Understanding Over Judgment: When you break a diet for your favorite ice cream, the productive response isn’t self-criticism—it’s understanding why you acted that way. Change requires awareness, care, creativity, and patience rather than pure constraint.
Goals as Direction: Goals shouldn’t be used to judge or lock down your future. A proper goal is merely a direction—like pointing at a distant peak and saying “I want to go there.” This supports Don’t Set a Goal For 2026 Until You Watch This.
Life’s Balance: Abstract learning (philosophy) without grounding becomes detached from life’s simple pleasures. All socializing without solitude leaves no room for reflection and creativity. Life needs all five flavors, both meat and vegetables.

Source: 谈谈不自律的良好生活

Effective Reading Strategies

A practical guide on retaining what you read offered some actionable techniques worth implementing.

Preview First: Spend 5-10 minutes per chapter skimming the table of contents, headings, introduction, and summary before diving into details. This builds a mental scaffold.
Question-Driven Reading: Before reading a section, convert the heading into a question (e.g., “What is X?”) and read to find the answer. This active approach improves engagement and retention.
Concise Personal Notes: Rather than transcribing passages verbatim, write brief paraphrases or bullet points in your own words. The act of reformulation strengthens memory.

Source: How to Remember Everything You Read

Obsidian Links

What I Touched This Week 2025-11-22

me@iany.me (Ian Yang) — Sat, 22 Nov 2025 00:00:00 +0000

Focus: ♯ Linear Algebra Done Right

AI Tools I’m Using

My selection prioritizes credit card payment compatibility.

Chat: Perplexity with Qianwen as backup
Coding: Copilot and Gemini CLI
Command line: aichat—shell mode (aichat -e) is particularly useful
Obsidian: obsidian-copilot—easily add multiple files by pasting a list of Obsidian links

Work Stuff

Reading

1. Intentional Goals vs. Traditional Goal-Setting

The concept of “intentional goals” offers a powerful paradigm shift in personal development philosophy. Unlike traditional goals that focus on future outcomes, intentional goals center on who you want to be in the present moment.

Key Insights:

Intentional goals function like lighthouses—providing direction rather than being destinations
They transform every moment into an opportunity to serve your greater vision
The “why does this matter?” exercise (asking five times) helps uncover deeper intentions
Regular review processes ensure goals continue serving your core intentions

Source: Don’t Set a Goal for 2026 Until You Watch This

2. Cursor’s Elite Engineering Culture

The deep dive into Cursor reveals a fascinating company culture built as a “haven for self-motivated individual contributors” where intense collaboration and product obsession drive innovation.

Cultural Pillars:

High-Agency Environment: Individual contributors hold the highest status, making things happen through enthusiasm rather than management
“Fuzz” Rituals: Silent, hour-long sessions where the entire team tries to break upcoming releases
Ceiling-First Design: Building for the best developers rather than making incremental improvements
Self-Imposed Excellence: No mandated hours, but meaningful percentage of team works extensively due to passion

Source: Inside Cursor

3. Human-AI Collaboration in Knowledge Work

This topic explores the evolving role of humans in AI-augmented workflows, emphasizing that “approval is thinking” in the AI era.

Collaboration Framework:

Cognitive Handshake: Using intuition and experience to approve AI’s logic chains
Traffic Light System:
- Green Zone: AI-driven tasks and automation
- Yellow Zone: AI as sparring partner for brainstorming and challenging ideas
- Red Zone: Human sovereignty over value judgments, emotional expression, and final decisions
Studio Mindset: Valuing ideas (Fleeting Notes) and final works (Permanent Notes) over raw information

Source: AI 时代，你的知识管理工具该扔了吗

Obsidian Links

What I Touched This Week 2021-03-06

me@iany.me (Ian Yang) — Sat, 06 Mar 2021 00:00:00 +0000

🕯 R.I.P 达叔.

I have finished the following books:

Computer Systems: A Programmer’s Perspective
Designing Distributed Systems: Patterns and Paradigms for Scalable, Reliable Services

Reading

为了游戏世界里沉默的少数派，她已经迈出了第一步 - 少数派

多一些对少数群体的体谅。

logseq

Recommended by @laike9m.

A privacy-first, open-source(frontend now, backend later) platform for knowledge sharing and management.

Inspired by Roam Research, Workflowy, and Emacs org-mode.

How to Move Your Team Toward Async-First Communication

Async communication is about allowing team members to “consume and respond to messages on their own time instead of on the sender’s schedule.”

如何更好地保护手机数据隐私？这 10 款 App 你可能用得上 - 少数派

EXIF，打码，网络浏览痕迹，临时手机号和邮箱

Andrew Ng Advice on Reading Research Papers

Compile list of papers and articles.
Skip around the list. Read 10% of each paper and choose the ones worth the time to delve into.
The bad way is reading from the first word to the last word.
- Read the title, the abstract, and the figures.
- Read the intro, the conclusions, all figures and skim the rest.
- Skim related work.
- Read the paper but skip the math.
- Read whole things but skip parts that don’t make sense.
Read to answer the questions:
- What did authors try to accomplish.
- What can you use yourself?
- What other references do you want to follow?
Math and code:
- Re-derive/Re-implement from scratch.

GitHub Skyline

Turn the contributions chart to a 3D model. Here is mine in 2020.

Foundational distributed systems papers

A curated list of papers.

Conway’s law - Wikipedia

Any organization that designs a system (defined broadly) will produce a design whose structure is a copy of the organization’s communication structure.

— Melvin E. Conway

Mistakes I’ve Made as an Engineering Manager

Mistake 1: Thinking people give feedback the way they want to receive it
Mistake 2: Trying to do everything yourself as a manager is the best way to help
Mistake 3: Communicating something one time is enough
Mistake 4: You have to have everything together all the time

People Who Adopt These 5 Verbal Habits in 2021 Have Very High Emotional Intelligence

“Tell me more.”
“Thanks for your understanding.”
“Hello.”
“Am I making sense?”
Absolutely nothing.

卡片笔记法、Roam Research 与个人笔记体系的建立——拯救「写过就忘」 - 少数派

无论是写永久笔记还是瞬时笔记，把句子写得尽量清楚、完整。这样在回顾笔记的时候自己的想法一目了然。
把所有的链接性语句也完整地写下来，这个过程可以更好地帮助自己发现思考中的漏洞，使得笔记内容更加严谨。

Funny

当你很享受很喜欢这份礼物时，却发现这不是给你准备的

What I Touched This Week 2021-02-27

me@iany.me (Ian Yang) — Sat, 27 Feb 2021 00:00:00 +0000

I have read 2 books:

Extreme Ownership, by Jocko Willink and Leif Babin.
Ikigai: The Japanese Secret to a Long and Happy Life, by Hector Garcia and Francesc Miralles.

┌ Extreme Ownership

A leader must take the responsibility of team failures.
A leader must help the team to reach high standards.
A leader has to admit her own mistakes.

┌ Ikigai

Ikigai means having a life purpose.

Finding your Ikigai
Finding Flow

┌ GNU Parallel

GNU Parallel is similar to xargs but runs commands in parallel.

┌ GitHub Actions Manual Trigger

GitHub Actions can add manual triggers. This article introduces the API to fire the trigger.

curl -H "Content-Type:application/json" \
-H "Authorization: token $GITHUB_ACCESS_TOKEN" \
-X POST -d '{"inputs": {}, "ref":"master"}' \
"https://api.github.com/repos/$ORG/$REPO/actions/workflows/$ACTION_ID/dispatches"

┌ Ask Doist: How Can I Stay Productive and Organized as a Student While Maintaining Work-Life Balance

Focus on the hard things. Get out of the comfort zones.
Combine school and relationships by studying together.
Take care of your home on breaks.

┌ Git - Switching Branches Without Touching the Working Tree

git symbolic-ref HEAD refs/heads/debug-branch
git reset

What I Touched This Week 2021-02-21

me@iany.me (Ian Yang) — Sun, 21 Feb 2021 00:00:00 +0000

I published 2 posts:

During the holiday, I have migrated my information hub from Diigo to Readwise.

┌ Reclipped

Reclipped is a tool to take timestamped notes on videos. It supports popular video platforms, such as YouTube and Vimeo.

┌ Hashed and Hierarchical Timing Wheels

Keeping a lot of timers is a common problem in many distributed system. The paper “Hashed and Hierarchical Timing Wheels: Data Structures for the Efficient Implementation of a Timer Facility – Varghese & Lauck 1987” has listed 7 data structures and recommended the last two: Hashing Wheel with Unordered Timer Lists and Hierarchical Timing Wheels.

The morning paper has a good summary and this video have listed several implementations.

┌ How to Efficiently Choose the Right Database for Your Applications

In this post, the author shared two decision trees to choose SQL and NoSQL databases. He also shared some tips for choosing a database.

┌ How to Craft the Perfect Daily Schedule (According to Science)

Know your energy pattern and match your tasks to your energy.

┌ Mutation Driven Testing – When TDD Just Isn’t Good Enough

Write tests and ensure they all pass.

Repeat following procedure:

Mutate the code to introduce some bugs.
Check whether the bug is captured by test. If not, modify the existing test cases or add new ones.
Revert the bugs and ensure test is green again.

┌ Fail at Scale - ACM Queue

Ben Maurer shared several software reliability techniques used in Facebook.

┌ Writing a Time Series Database from Scratch

Fabian Reinartz introduced how he designed the V3 storage structure of Prometheus.

The essential of the design is splitting the data by time ranges.

What I Touched This Week 2021-02-06

me@iany.me (Ian Yang) — Sat, 06 Feb 2021 00:00:00 +0000

Picks:

Monitoring in the time of Cloud Native | by Cindy Sridharan | Medium

Observability is about the ability to let maintainers understand how the system behaves in the production. It’s a super set of monitoring. Observability makes debugging possible in production.

Three pillars of observability:
- Logs
- Metrics
- Traces
@copyconstruct: Hashed and Hierarchical Timing Wheels: Data Structures for the Efficient Implementation of a Timer Facility, paper from 1987 that’s used in Kafka and rust’s tokio library.

The thread has listed several timing wheels implementations and a seminar video.
Set Up a New Mac

Programming

Software development topics I’ve changed my mind on after 6 years in the industry
- Clever code isn’t usually good code. Clarity trumps all other concerns.
- So called “best practices” are contextual and not broadly applicable. Blindly following them makes you an idiot
- Designing scalable systems when you don’t need to makes you a bad engineer.
- In general, RDBMS > NoSql

DevOps

Productivity

芯片工程师的一天 | 我如何每天高效工作12小时？【经验分享】一个普通芯片工程师在家高效工作的一天，从早8点到凌晨1点半，分享一下保持高效工作和学习的6个方法和技巧。欢迎关注我的频道“老石谈芯”，我会持续带来更多专注于芯片的科普、硬核知识、以及偶尔极度硬核的技术分析与解读，我也会不断分享高效工作和学习的方法与技巧。更多内容，也欢迎关注公众号和微博。公众号：老石谈芯微博：老石谈芯的老石 Music: Ikson - Paradise

Computer Setup

Setting up a new machine | Alabê’s Blog

Use brew bundle to restore Homebrew packages:
```
$ brew bundle dump --file=Brewfile
$ brew bundle --file=Brewfile
```
How To Use Short Passwords On MacOS Big Sur. 4 Characters Not Required. (Updated) | by CHARLES HEARN | Medium
```
pwpolicy -clearaccountpolicies
```
Using Your YubiKey as a Smart Card in macOS – Yubico

To turn off the pairing user interface in macOS
```
sc_auth pairing_ui -s disable
```

Economics

Ray Dalio: What I Really Think of Bitcoin
- Bitcoin is one hell of an invention
- there being a growing need for money or storehold of wealth assets that are limited in supply
- there is also a growing need for assets that can be privately held.

Bookmarks

Funny

What I Touched This Week 2020-12-06

me@iany.me (Ian Yang) — Sun, 06 Dec 2020 00:00:00 +0000

I have been setting up the QNAP NAS this week.

Use Emby as the media server.
Install Transmission via Container Station for BT.

Misc

What I Touched This Week 2020-10-11

me@iany.me (Ian Yang) — Sun, 11 Oct 2020 00:00:00 +0000

Picks:

做產品真是哭夭難！ — Marty Cagan 演講 70 分鐘中文逐字翻譯 | by Jason HOU (Q&A 中文逐字翻譯 | Video)

Product

Why This Opportunity Solution Tree is Changing the Way Product Teams Work

Work along both dimensions of product discovery
- discovering opportunities
- discovering solutions
Flavors of Prototypes

There are in fact many very different forms of prototypes, each with different characteristics and each suited to testing different things.

Programming

Fast Thread Locals In Rust
- Rust thread-locals are slower than they could be.
- Rust allows cross-language Link Time Optimization.

Why I Scatter Use Statements Throughout My Rust

I support limiting the scope of the extension traits:

let input: Data = {
use anyhow::Context as _;
serde_yaml::from_reader(std::io::stdin()).context("couldn't read stdin")?
};

Security

We Hacked Apple for 3 Months: Here’s What We Found

Interesting Stuff

有三分钟热度就有三分钟收获

What I Touched This Week 2020-09-26

me@iany.me (Ian Yang) — Sat, 26 Sep 2020 00:00:00 +0000

My picks

An introduction to Data Oriented Design with Rust - Statistically Insignificant

This article introduces several data-oriented patterns for better performance.
The art of deprioritization

You can’t have more than one top priority. You just can’t. Deciding to prioritize one thing means, by definition, deciding not to prioritize something else.

Techniques

Living with Asynchrony: Bracha’s Reliable Broadcast

This is one of the most important build blocks for Byzantine Fault Tolerant protocols in the Asynchronous model.
How can query string parameters be forwarded through a proxy_pass with nginx? - Stack Overflow

Query args must be forwarded manually on location block matched by regex.
```
 proxy_pass http://apache/$1$is_args$args;
```
Why Not Rust?

Situations when Rust is not a proper choice.

Painting

【Krenz】繪畫地圖：一節課解析繪畫學習路徑，萌新從此不走彎路
- 关键词：准确
- 抽象能力，不同层级采用不同的抽象。容易模块化创建记忆库，而通过模块的组合就能进行创造。
Modeling & Painting Process - Piano

A fancy piano modeled in Blender.

Bookmarks

Interesting Stuff

What I Touched This Week 2020-09-19

me@iany.me (Ian Yang) — Sat, 19 Sep 2020 00:00:00 +0000

I have read the book Specifying Systems: The TLA+ Language and Tools for Hardware and Software Engineers and several other books about painting.

My picks:

8 Cognitive Biases in Software Development
- What are cognitive biases and how they can pop up in our work, as software developers.
- Different techniques to prevent these biases, to take more logical decisions.

Technique

How Algorithms Are Changing What We Read Online

But, on your phone, you scroll through what’s been selected for you. And that selection likely reflects a ruthless narrowing of editorial values and priorities.
The land before modern APIs

When we’re trying to build the future, it’s extremely helpful to look to the past.

Programming

Your Language Sucks, It Doesn’t Matter

This post describes the author’s own pet theory of programming languages popularity.

Languages generally become popular when they bring innovative runtime, or when they have runtime exclusivity. The quality of the language itself is secondary.
Rust 2020: Testing
- Use the crate mockall to auto-generate a mocked implementation that I instantiate in my test.
- But it turns out you can still do this, using the nightly compiler! Enter Mocktopus, a module-level mocking library.
Rust HTTP Testing with httpmock | Alex Liesenfeld

According to the comparison matrix the most complete package is currently provided by httpmock.
C++ vs Rust: an async Thread-per-Core story | by Glauber Costa | Sep, 2020 | Medium
What killed Haskell, could kill Rust

An interesting essay about what Rust community should avoid.

Productivity

如何让便利贴成为效率工具？

便利贴的 11 个用法和三个使用技巧

Painting

What I Touched This Week 2020-09-12

me@iany.me (Ian Yang) — Sat, 12 Sep 2020 00:00:00 +0000

Last week picks:

Productivity Shame: How To Stop Feeling Like You Haven’t Done ‘Enough’

Productivity

How to stop procrastinating by using the Fogg Behavior Model

Behavior = Motivation + Ability + Trigger

The key is that we need to have all three at the same time in order to act.
How to stop procrastinating by using the Fogg Behavior Model - Part 2.

Removing any of three factors can avoid doing something.
如何读书更有效？——我的阅读经验
如何做好复盘？这是我的经验
不要只学「表面知识」

不要停留在「表面知识」，而是应该追根溯源，理解它，亲手去尝试。做出丑陋的东西，让自己清楚地认识到他很丑，然后做出有进步的东西，认识到他仍然很丑，然后再让他进步一点点，你的审美才能以这种方法有效率地正确提升。

Blockchain

Bitcoin

What Are Bitcoin Nodes and Why Do We Need Them?
- the number of nodes on the network is dropping, and core developers believe it may continue to do so.
- running a bitcoin node does not provide any incentive.

Ethereum

Ethereum is a Dark Forest

Arbitrage bots monitor pending transactions and attempt to exploit profitable opportunities created by them.
Ethereum fee market reform: EIP-1559 as a question of fairness
EVM384 – Can we do Fast Crypto in EVM? - HackMD

DeFi

Software

Windows 解压非 UTF-8 中文文件名的 zip 包
```
7z x files.zip -mcp=936
```

Painting

How To Color Sketches In Procreate w/o Using Outlines!

Bookmarks

Interesting

@kevinzhow: 看完了这个诺兰的知识预热，极大的提升了本次信条的观后体验

What I Touched This Week 2020-09-05

me@iany.me (Ian Yang) — Sat, 05 Sep 2020 00:00:00 +0000

I have been reading the book Zero to Monero: Second Edition.

I started to study TLA+ from the last week.

Blockchain

Answer: What’s the most efficient way to create a raw transaction with a specific fee rate?

References of Coin Selection algorithms.

Management

@b0rk: what to talk about in 1:1s

Productivity

Paper beats app: How this software company uses analog tools to get things done

Painting

12 x DIGITAL DRAWING exercise | Get better at digital drawing
7 iPad Apps Every Artist Needs (that are not drawing apps)

Manikin, Cooler, Board

Bookmarks

Some UI libraries

What I Touched This Week 2020-08-29

me@iany.me (Ian Yang) — Sat, 29 Aug 2020 00:00:00 +0000

I did research on Blockchain timestamp and timejacking attack last week.

I have completed the course Stanford CS166 and shared my notes via Evernote.

Blockchain Timestamp Research

Discussion on CKB Block Timestamp Improvements
Bitcoin’s Block Timestamp Protection Rules | BitMEX Blog
- Two hours is only a small fraction of the difficulty adjustment cycle, two weeks.
culubas: Timejacking & Bitcoin
- Block timestamp is valid if
  - it is greater than median of previous 11 blocks
  - it is less than or equal to network time + 2h
- Network time = local time + median offset from 5~200 peers
  - Max allowed adjustment is 70 minutes.
- “Poison Pill” Block
  - Make a group of nodes 70 minutes faster, the target 70 minutes slower. That’s a 140 minutes gap, and the max allowed future block time offset is 2 hours.
- Solutions
  - Use the node’s system time instead of the network time to determine the upper limit of block timestamps and when creating blocks.
  - Tighten the acceptable time ranges.
  - The node’s network time could be restricted to a value within 30 minutes.
  - Use only trusted peers.
  - Use the median block chain time exclusively when validating blocks.

Blockchain

wallet - What’s the most efficient way to create a raw transaction with a specific fee rate? - Bitcoin Stack Exchange

Coin selection algorithms.
探索 DeFi 世界下一个宝藏领域：加密原生保险的机遇和挑战

「投机」在这里具备积极的社会意义：有助于为寻求「真实」投保范围的人实现流动市场的冷启动，并为不同 DeFi 元素的安全性提供了晴雨表。
探索流动性挖矿的设计空间
- 谁获得奖励
- 他们都获得多少奖励
- 他们什么时候获得奖励
2020年币圈下半场投资主题：公链的桥化和侧链化趋势
以太坊免费时代之死：智能钱包的机遇和挑战

Productivity

Productivity Advice, Based on Your Enneagram Personality Type

Interesting

This equation will change how you see the world (the logistic map)

Bookmarks

What I Touched This Week 2020-08-22

me@iany.me (Ian Yang) — Sat, 22 Aug 2020 00:00:00 +0000

I have posted:

♯ Bitcoin Core Fee Estimate Algorithm, a study on the fee estimate algorithm implemented in Bitcoin Core.
Illustration of “Bitcoin - New attack against LN payment atomicity related to Fee Bumping”

I have finished three books

OKR

Productivity

Collaborate like a kid: What preschoolers can teach us about adjusting to remote work

Programming

To Learn Computer Science the Old-Fashioned Way
- Learn what operating system really is first.
- Try out Linux From Scratch.
- Programming is Data Structure + Algorithm
- A true engineer need to know how things work and be creative
- Computer Systems: A Programmer’s Perspective.

Interesting

Bookmarks

What I Touched This Week 2020-08-15

me@iany.me (Ian Yang) — Sat, 15 Aug 2020 00:00:00 +0000

The picks

History of Philosophy - Summarized & Visualized

This is amazing and shows the power of linked notes
TED - Laura Vanderkam: How to gain control of your free time

If you value something, plan in advance and ensure they have the highest priority.

Blockchain

Two Reasons Crypto’s Bull Market Is Coming
- One will involve the rotation of capital from zombie projects to protocols where the underlying product is actually being used and accruing value.
- Decentralized finance (DeFi) is outshining alts
- The second bull market will be led by the usual suspect, bitcoin.
Echo | 工作量证明本质上是一个去中心化时钟
- 工作量证明时钟提供滴答声
- 使用区块作为 SHA256 输入把区块和时钟的滴答声联系在了一起
The Downside of DAOs

DAOs are meant to be run by the average user, but the reality seems to be that venture capital firms and other powerful investors rule the day for now.
The inevitable demise of unconfirmed Bitcoin transactions | by Bram Cohen | Medium

This article introduces two ways to exploit zeroconf transactions and the emerged problems relying on zeroconf transactions.

Productivity

How to Vanquish Busywork and Spend More Time on What Matters
- Outsource
- Create templates where necessary
- Batch and single-task
- Change of scenery
- The art of saying “no”

Software Development

Who Builds the Builder?

TL;DR: if you have Foo and FooBuilder, consider adding a builder method to Foo
7 Reasons Why Your Staging Environment Sucks
- Your staging environment is not architecturally representative of your production environment.
- You only keep it running for a few minutes.
- You are not monitoring the staging behavior.
- It doesn’t contain real data.
- Nothing is happening in it.
- It is not facing the Internet.
- It is missing the element of surprise.

Open Source

5 tips for making documentation a priority in open source projects

Economics

谁扼住了华为：美日半导体霸权的三张牌
- 美国手握的两把利剑：芯片设备和设计工具。这两把剑又和日本的材料一起，组成了威力极强的美日半导体霸权三张牌：设备、工具和材料。
- 一切都回到了任正非此前无数次强调的基础科学。

Product

Ink & Switch has some ideas about how to use iPad efficiently.

Interesting

Bookmarks

What I Touched This Week 2020-08-09

me@iany.me (Ian Yang) — Sun, 09 Aug 2020 00:00:00 +0000

Recommended in the last week:

What to Do When You’re Mentally Exhausted
- Acknowledging that fatigue is a natural result of challenging your brain can be freeing in and of itself.
- Different ways to handle fatigue, such as diet, sleep, exercise and work methods.

Productivity

The Automation of Note-Taking and the Just-In-Time Future of Work
- [See nodes in] random combinations. We need to be able to shuffle our notes around to generate new insights.
- It’s now more important to do the opposite: finding information that contradicts or disconfirms what we know. Discovering information that contradicts what we currently believe is the new frontier of learning.
我们究竟需要怎样的时间管理工具
- 我发现最合适的还是以笔记软件为主、轻量提醒工具为辅的组合（目前我的组合是 Notion + Dislike）。
效率提升：让你一天多出几个小时的做事方法！

提前规划，统筹安排
Efficiency Is Not Our Goal
- Value total organizational throughput.
- [Pay attention to] how much coordination and agreement cost must be spent preventing inefficiency
- There are other times when throughput is damaged in pursuit of efficiency.
The Freelancer’s Guide to Todoist
- According to a 2019 UpWork study, 57 million Americans, or 35% of the U.S. population, do freelance work.
- Labels usage examples:
  - and an “amplify” label to share content created by peers you admire whose work you want to signal boost.
  - Use labels like $, $$, or $$$ to differentiate which tasks and assignments have the highest earning potential so you can gauge the worth of a to-do at a glance.
Advantages of not using the best tool for the job

if you need a tool, buy the cheapest one you can find. If it’s inadequate, or breaks, or you use it a lot, then buy the best one you can afford.
This simple but powerful analog method will rocket your productivity
- If an idea has value, it will rise to the surface as more related notes emerge.
- Note links exponentially increase the value of the system.
如何追求精力充沛的生活
- 工作成果 = 工作效率 X 有效工作时间
- 下一步我们能做的就是提高自己的工作效率，这就需要我们做好精力管理。
- 应对不同场景，将自己的行为流程化
- Morning Routine 起到了心理暗示的效果，让我可以快速进入到工作状态中。
How to Take a Digital Note, by Tiago Forte
如何打造个人核心竞争力

Management

Brief explanation of agile - This is Agile
Code review – from good to great

In a team I sat next to, a junior developer asked a senior to conduct code review for a newly completed feature. According to the process, that Senior had to approve all changes going to production. Here is how it went: Senior: “No, I am busy.”

Software Development

Automated Canary Analysis at Netflix with Kayenta
- Traffic is split between these two versions such that a portion of incoming requests are diverted to the canary.
Local-first software, You own your data, in spite of the cloud
- Most notably are the family of distributed systems algorithms called Conflict-free Replicated Data Types (CRDTs).
Our remote work future is going to suck

As COVID-19 continues to alter the way we live, there is a scramble to predict what our “new normal” will look like. After the virus fades away or, God help us, becomes a constant in our day-to-day life for years to come, which change brought on by the pandemic will stick?
- eventually competing with the global talent market
- Remote enables you to be forgotten
How we migrated Dropbox from Nginx to Envoy
- [Nginx,] although it is event-loop based, is it not fully non-blocking.
- Envoy uses threads instead of processes. It relies on libevent for event loop implementation. Envoy does not have any blocking IO operations in the event loop.
- Nginx showed higher long tail latencies. This was mostly due to event loops stalls under heavy I/O
- Envoy has the ability to stream access logs over gRPC.
- Envoy has control RPC.
- Envoy has a unified data-model for configs: all of its configuration is defined in Protocol Buffers.
- Envoy relies heavily on modern security practices. It uses AddressSanitizer, ThreadSanitizer, and MemorySanitizer. Its developers even went beyond that and adopted fuzzing.
SQL style guide by Simon Holywell
You’ve only added two lines - why did that take two days!

Blockchain

UTXO Management for Enterprise Wallets introduced two wallet models, Send-Only hot wallet and Send-and-Receive Hot Wallet. It also has many interesting discussions about the utxo management.
Field Report: Using Descriptors and PSBT at River Financial
Idea about the composability of assets in ckb

Recently, I am working on the prototype of the generic payment channel (GPC). But I find the current model is not completely generic.

Apps Usage

How to Combine Different Structures in XMind and Why - XMind: The Most Popular Mind Mapping Software on The Planet.
How GoodNotes Uses GoodNotes
请把这张图打印出来，下次做PPT时对照检查！
- 时间就应该更多花在演示设计上
- 明确演示目标
  1. 听众（汇报对象）是谁？
  2. 核心信息是什么？
  3. 这个汇报在什么场景下展示？
    - 如果是演讲，那就要考虑「矛盾导入」「发现问题」「分析问题」「解决问题」的逻辑。
    - 如果是工作汇报，那就要考虑「结论先行」「论据补充」的「金字塔逻辑」。
- 数据
  - 过往案例 (纵向)
  - 其他企业案例 (横向)
- 有了大概的思路后，可以考虑把提纲画好，并明确清楚哪些素材有了，哪些素材还欠缺。
- 可以考虑找到一些相关领域的专业知识，用它来提纲挈领，整体便有了高度。
- 展示准备
  - 设计包袱
  - 互动
  - 视频
  - 幽默
用好 Keynote 和 iMovie，在 iPad 上做出有高级感的视频 - 少数派
- 使用 Keynote 神奇移动
- 用 Videoleap 这个 App 的「色度」工具同样可以抠除背景。
- 在 Mac 平台出现了一款叫 Design Camera 的软件，实质上是高度自动化的 3D 模板带壳截屏，可以生成运动立体的带壳截屏视频。这款叫 SceneShot 的App填补了 [iOS] 这一空白，它可能是目前带壳截屏类App中最高级的了，它提供 3D 模版供你调整，并可以定制背景和环境光线，甚至还有特效滤镜等等功能。
- 之前介绍过的 Canva，最近刚更新了视频制作功能

Hardware

为什么 ARM 版 Mac 运行效率很高？
- Apple 不仅处理掉了第三方的 CPU，且一并处理掉了第三方的 GPU。
- Mac 这次的芯片变革需要撑得起未来十年，其最优解便是将专精芯片以最优工艺的整合在 Soc 中。
看懂高通的一图流：QC5 将这样改变你的快充体验
- 最高支持 100W 充电功率
- 与 PD 兼容
- 考虑购买更为通用的 PD-PPS 充电器，并且尽量购买支持电流到 5A/支持电压到 20V 的充电器，为下一代即将到来的 PD-PPS 快充作准备。而在购买 Type-C 线缆的时候，也请优先考虑购买最大承载电流达到 5A 的充电线。

Business

Microsoft’s TikTok: But why?
PR FAQs for Product Documents – Everything Product Managers Need to Know

A Press Release (PR) Frequently Asked Questions (FAQ) is a customer-centric document for designing new products. It is an idealized future “Press Release” (PR) and associated FAQs. The PR FAQ is the starting point for your other product documents.

Life

氮化镓是如何让充电器变小的？

我们想认真的聊一聊氮化镓是怎么让充电器从一块大砖头变成半块砖头，变成一只口红，甚至变成一个仙贝。

Misc

Timeful Texts

Book designed with spaced repetition memory systems in mind.
How (some) good corporate engineering blogs are written
大国隐痛：做一个操作系统有多难？
- 用国产系统可以向指标交账，却做不了业务没资金入账。
同样受歧视的印度人，为什么却如此成功？
- 在英美的留学生人数中国第一，印度第二，为什么我们没听说歧视印度人的呢？！
- 根据《哈佛商业评论》的一项研究，世界 500 强企业中，30% 的掌舵人都是印度人。
- 美国的中日韩裔人数是印巴裔人数的 1.5 倍
- 他们有远远强于我们的沟通能力，更重要的是他们非常有要沟通的意识。
- 专业也许你不需要最强的，但是你的沟通能力，你的视野才是最重要的
- 家庭条件很一般甚至很差的情况下，家长只要发现孩子是聪明、愿意用功的，真的会和中国家长一样不惜砸锅卖铁也要去培养孩子成才的。
- 一方面他们特别保持自己的传统价值观，一方面他们又是非常游刃有余的在跟主流融化有融合
- 印度文化鼓励辩论和争论
- 我们大部分情况下，华人是互相忌惮的。
- H1B 签证的话，印度差不多每年有四五万，中国是他们的十分之一。

Interesting Stuffs

Bookmarks

What I Touched This Week 2020-08-02

me@iany.me (Ian Yang) — Sun, 02 Aug 2020 00:00:00 +0000

I was reading Leading Snowflakes and posts from Forte Labs.

Blockchain

Productivity

P.A.R.A. 是什么及在 Notion 中的应用
Writing is Thinking
- They serve to build a corporate history
- Shared corporate history of why/how
- The act of writing, forces the author to think through all the details and steps required to share the lesson.
- It is easier to contribute

Management

Agile Product Ownership in a Nutshell

Concise introduction to Agile.
How to Create Group Norms
How Extreme Transparency Can Make Your Team Its Most Productive
Show How, Don’t Tell What - A Management Style
The Two Sides of Trust

┌ About motivation

RSA ANIMATE: Drive: The surprising truth about what motivates us
- Autonomy
- Mastery
- Purpose
How To Keep Your Best Programmers
Bored People Quit
How Developers Stop Learning: Rise of the Expert Beginner

Expert beginner thinks that he/she already mastered the domain so stops improving.

Product

What Animal Crossing can teach us about marketing and product development

Writing

12 Powerful Tips on How to Write Persuasive Blog Posts
- Focus on the solutions, focus on why
- Use own visual content, examples and stories
- Talk about why to show empathy and keep readers involved in the conversation
- Back Up Your Claims with Statistics from Reliable Sources
How to Write Technical Posts (so people will read them)
- [You have] four sentences to convince [readers].
- Focus on solutions to problems, focus on why
- First sentence of each paragraph should be sufficient to understand the rest of the paragraph.
- Keep them on the same page, show empathy.
  - Less distractions
  - Point out what they might be thinking, and then very explicitly show them what they should be thinking instead.
  - If you’re giving examples of something that fits a pattern, make sure you give examples of things that do not fit the pattern.
    - People learn by seeing lots of examples
  - Anticipate which parts of your argument will be difficult for your readers

Bookmarks

Mermaid live editor, creating diagrams from plain text.
Make better decisions, decision matrix
LOOPY: a tool for thinking in systems
Mozilla VPN: Protect Your Entire Device

What I Touched This Week 2020-07-26

me@iany.me (Ian Yang) — Sun, 26 Jul 2020 00:00:00 +0000

I’m trying P.A.R.A after reading P.A.R.A. 是什么及在 Notion 中的应用.

Tech

┌ Programming

The Developer Debrief on WWDC 2020

Non-Tech

┌ Product

Stripe: Building a Developer Cult

Principles for creating product for developers:
- Empathy
- Make them want to spend their free time building on your product
- Make them want to start a cult for your product
- Make them your biggest fans
看了100个年入1亿的新品牌后，总结的10条反常识消费品牌创业军规 |【经纬低调分享】
- 在开始消费品创业之前，请先阅读一本经典的菲利普·科特勒的《营销管理》这本书
- 一个好的品牌，其实是创始人自己本人的哲学观、生活态度的外化
风投基金 Dragonfly 给加密世界画了一份创业寻宝图

┌ Life

汉堡王被曝销售过期食品，遇到这种情况你该如何维权？
- 协商
- 12315 投诉
- 民事诉讼

┌ Social

Don’t shame people who don’t wear masks. It won’t work.

Bookmarks

Gymnasticbodies, self weight workout

What I Touched This Week 2020-07-19

me@iany.me (Ian Yang) — Sun, 19 Jul 2020 00:00:00 +0000

Tech

┌ Blockchain

┌ AI

Why general artificial intelligence will not be realized
- Computers cannot handle causality because they cannot intervene in the world. They are not the part of the world.
- Human have tacit knowledge learned by examples and counter-examples.
- Deep learning has even turned out to be vulnerable to tiny changes, but real world problems take place in a changing world.

┌ Windows

巧用注册表和命令行，把鼠标右键打造成你的专属工具箱

Non-Tech

┌ Management

How to Prioritize Features at Your Company - Due
Blameless PostMortems and a Just Culture
- The owner can give this detailed account without fear of punishment or retribution.
- The owner is the most expert in their own error, and can help to avoid such error in future.
- It’s more important to understand why it happens.
Dick Costolo Warns Against Trying To Be Liked And Lionizing Silicon Valley Figures

Not leading by trying to be liked. Care for your employees, but don’t care what they think about you.
Technicality
- You take action so that you stay in touch with how your team builds stuff.
- Be able to draw a detailed architectural diagram describing your product on any whiteboard at any time.
- Better communication.
Maker’s schedule, manager’s schedule

┌ Economics

┌ Hardware

What’s the Bluetooth pairing button on the Magic Keyboard?

Hold ⌘W to force paring mode.

Quotes

有人问一位加拿大神经心理学家唐纳德.赫布：“先天和后天哪个对人性影响更大？”，他是这么回答的：“哪个对矩形的面积影响更大，长度还是宽度呢？” →

Bookmarks

google/tsunami-security-scanner: Tsunami is a general purpose network security scanner with an extensible plugin system for detecting high severity vulnerabilities with high confidence.

What I Touched This Week 2020-07-12

me@iany.me (Ian Yang) — Sun, 12 Jul 2020 00:00:00 +0000

I have posted ♯ Yubico for Windows.

I have finished the book Regretting You.

Tacit Knowledge

I have read a series about tacit knowledge by Cedric Chin recently.

The sort of tacit knowledge [the author is] interested in is that of ‘expert intuition’.

In the second post, the author has introduced the Recognition-Primed Decision Making Model.

Recognition of goals, cues, expectancies and actions.
Perform the actions if there’s a pattern match. If there are several candidates, people usually try them one by one and adopt the first one which meets all the requirements.
If the pattern is abnormal, analyze and collect more data and rerun the loop.

Tech

┌ Programming

Ringbahn II: the central state machine

Last time I wrote about ringbahn, a safe API for using io-uring from Rust. I wrote that I would soon write a series of posts about the mechanism that makes ringbahn work. In the first post in that series, I want to look at the core state machine of ringbahn which makes it memory safe.

┌ Blockchain

RFC: Swappable Signature Verification Protocol Spec - English / Development & Technical Discussion - Nervos Talk

This proposal describes a solution to decouple the lock script app logic and signature verification logic.
Bitcoin Optech Newsletter #105 | Bitcoin Optech
- Prevent network topology leaks by caching responses to getaddr.
- Bitcoin Core #19204 eliminates a source of wasted bandwidth during Initial Block Download (IBD) by setting feefilter.

┌ Security

maxgoedjen/secretive: Store SSH keys in the Secure Enclave in macOS

┌ Apps

How Did Vim Become So Popular
6 Google Sheets functions that do more than math

My picks
- Google translate: =GOOGLETRANSLATE("A2", "fr", "es")
- Import HTML and RSS:
  - =IMPORTHTML("https://en.wikipedia.org/wiki/List_of_most_popular_given_names", "table", 3)
  - =IMPORTFEED("https://rss.nytimes.com/services/xml/rss/nyt/PersonalTech.xml")
- Embedded line chart: =SPARKLINE(B3:B22)

┌ Software Engineer

Blog: Failing (and winning) at planning software projects

When it comes to planning software projects on the macro level, there’s two extremes – trying to plan everything up-front or accepting the impossibility of getting that right and not bothering to plan anything at all.

Non-tech

┌ Social

Welcome to the 21st Century

The choices our societies make now can have an enormous impact on the course of the next few decades.

┌ Productivity

┌ Life

挑选一台字体显示效果出色的显示器，要注意哪些问题？

Interesting

Bookmarks

Home - Canva, a design tool with a lot quick started templates.
The macOS apps which can control the external displays.
- Lunar
- MonitorControl:
mermaid - Markdownish syntax for generating flowcharts, sequence diagrams, class diagrams, gantt charts and git graphs.
HackMD - Collaborative Markdown Knowledge Base
Semantic Scholar | AI-Powered Research Tool

What I Touched This Week 2020-07-05

me@iany.me (Ian Yang) — Sun, 05 Jul 2020 00:00:00 +0000

I have read 幻夜.

Tech

┌ Programming

How to Design For Panic Resilience in Rust
Your dev environment matters less than you think
- Popular: So you can easily find help.
- Easy to get going: Your goal is ship useful code, and as a beginner time spent fiddling with your dev environment won’t help with that.
HEY’s Gemfile

┌ Blockchain

┌ Linux System Admin

How to reset a root password on Fedora
- Enter single user root shell
```
rd.break enforcing=0
```
- Remount system root and change the root password
```
mount -o remount,rw /sysroot/
chroot /sysroot
passwd
```

Non-tech

┌ Productivity

About Tools for better thinking

┌ Business

I Just Hit $100k/yr On GitHub Sponsors!

┌ Economics

钟伟：MMT掩盖了什么样的全球经济金融问题

┌ Social

科技与社会，是谁改变了谁？

┌ Accounting

Peter Selinger: Tutorial on multiple currency accounting
- Assets − Liabilities = Capital + Income − Expenses.

Interesting

Julian West on Twitter: “For the network nerds…

Bookmarks

What I Touched This Week 2020-06-27

me@iany.me (Ian Yang) — Sat, 27 Jun 2020 00:00:00 +0000

I have re-read 黑客与画家.

I have published:

I have recommended:

On Coding, Ego and Attention, tips about taming the ego distraction.

Tech

┌ Performance

Exercise 2 - Track User Mode Process Allocations | Microsoft Docs

┌ Software

旧电脑再利用：完整版 Chrome OS 安装指南
2020 Chrome Extension Performance Report

The main metrics I’ll consider are CPU consumption, memory consumption, and whether the extension makes pages render more slowly.

Non-tech

┌ Business

The iOS App Store Brings Users Only Because It’s the Only Choice

One might argue that developers should love the App Store because it brings the users. Like any other product or service, Hey has to persuade people that they have a problem it can solve, and that it’s worth paying for.
Microsoft isn’t happy with Apple’s App Store bullying either

Microsoft believes it’s time for antitrust regulators to fully investigate Apple’s App Store. Speaking during a Politico interview this week, Microsoft’s chief legal officer Brad Smith outlined Apple’s walled garden approach to its App Store, and how it’s affecting competition.

┌ Methodology

Challenge your initial ideas

First principle / Think from different perspectives.

┌ Product

GitHub isn’t fun anymore

┌ Privacy

Interesting

RT @chenchenzh: Someone left a note as a “Hubei peasant worker” to the Dongguan (Guangdong) library

Bookmarks

github/super-linter: Combination of multiple linters to install as a GitHub Action
Amazon Honeycode | Build a Better Way to Work

Amazon no code app builder. It also can be used as a database or spreadsheet with associations like Airtable.
ZeroTier – Global Area Networking

VPN like tool to ease accessing home computers.
@yegle: 推荐一下这个购买健身器材配件的网站，提供安装PDF方便你快速找到相应零件。有的东西不这么找根本不知道它叫啥

What I Touched This Week 2020-06-21

me@iany.me (Ian Yang) — Sun, 21 Jun 2020 00:00:00 +0000

I’m recently working in Windows, so I take many notes about setting up the Windows environment.

♯ Minimize any window into system tray in Windows
How to open site pinned to taskbar in its own window in Edge?
1. Open edge://apps
2. Right click the app and uncheck “Open in full browser”
Answer: How to access the system tray using the keyboard?

Press Win+B to activate tray, and use Shift+F10 to show context menu.

More windows tips

Configuration

GitHub - Disassembler0/Win10-Initial-Setup-Script: PowerShell script for automation of routine tasks done after fresh installations of Windows 10 / Server 2016 / Server 2019

These scripts are verify useful to keep only minimal feature set. I personally has disabled following presets.
- HideQuickAccess hides quick access in explorer sidebar. I uses quick access to bookmark frequently access folders.
- DisableActionCenter disables the notifications in the right drawer. Notifications sometimes are helpful.
- ShowTrayIcons will always show all tray icons. I prefer selecting the icons to show manually.

Look and feel

The Chinese characters are ugly in Telegram for Windows when using English locale. A simple fixing is set system region to Chinese and Telegram will choose the right Chinese font. If it is not acceptable to change the region, an alternative solution is using FontMod. When I test it, I have to replace DAOpenSansRegular and DAVazirRegular.
how to scale krita UI ?

Uncheck Settings/Configure Krita/General/Window/Enable HiDPI support to rely on system scale setting.

Proxy

Using Scoop behind a proxy · lukesampson/scoop Wiki
```
scoop config proxy [username:password@]host:port
```
Web authentication broker - UWP applications | Microsoft Docs

Some UWP apps depend on AuthHost to connect services like Google. Nebo is an example. So it is not enough to add Nebo to the loopback exempt list, the AuthHost must be in the list as well to ensure Nebo using the system proxy.

This article has listed the following commands, where I have modified a bit to make them work in PowerShell
```
CheckNetIsolation.exe LoopbackExempt -a "-n=microsoft.windows.authhost.a.p_8wekyb3d8bbwe"
CheckNetIsolation.exe LoopbackExempt -a "-n=microsoft.windows.authhost.sso.p_8wekyb3d8bbwe"
CheckNetIsolation.exe LoopbackExempt -a "-n=microsoft.windows.authhost.sso.c_8wekyb3d8bbwe"
```
But I failed using these commands. Instead I find the SID from registry HKEY_CURRENT_USER\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings. Search AuthHost inside it, and the directory name is the SID. The following command works for me
```
CheckNetIsolation.exe loopbackexempt -a "-p=S-1-15-2-2750798217-1343590035-1234819260-1030354384-3318145141-3720257911-3461195215"
```

Productivity tips

Windows 10 will make screenshots easier with new snipping tool - TechSpot

WIN + Shift + S

Programming Environment

Git - gitattributes Documentation

The exported registry entries are encoded using UTF-16LE-BOM. Git recognizes them as binary file. Add the following line in .gitattributes
```
*.reg text working-tree-encoding=UTF-16LE-BOM eol=CRLF
```
Then renormalize existing files:
```
git add --renormalize .
```
Now it is able to diff the registry exported files. More details can be found in this commit
A script to simplify WSL installation via LxRunOffline
Use the PowerShell Registry Provider to Simplify Registry Access

List existing mounted registry drives:
```
Get-PSDrive -PSProvider registry | select name, root
```
Mount new roots as drives:
```
New-PSDrive -PSProvider registry -Root HKEY_CLASSES_ROOT -Name HKCR
```
How to update to PowerShell 7.0 on Windows 10

I install PowerShell 7.0 and use it as the default shell in Windows Terminal because it supports cd -
```
iex "& { $(irm https://aka.ms/install-powershell.ps1) } -UseMSI"
```
How to stop a PowerShell script on the first error?
```
$ErrorActionPreference = "Stop"
```

GPG and SSH security

Share SSH and GPG keys with WSL

Since WSL2 can use Windows executable directly, the most straightforward way is just using the Windows counterparts.
I finally have a comfortable setup to use YubiKey in Windows for gpg signing and ssh authentication. I’ll write a post about it later. The following article helps me a lot: How to use GPG with YubiKey (bonus: WSL).

OpenSSH server

OpenSSH Server Configuration for Windows | Microsoft Docs

The default shell is cmd, the following command sets the default shell to PowerShell instead

New-ItemProperty -Path "HKLM:\SOFTWARE\OpenSSH" -Name DefaultShell -Value "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -PropertyType String -Force

Visual Studio Code Switch Azure Account - Concurrency

Windows now has bundled OpenSSH server. But the key authorization requires strict restrictions on the authorized keys file permissions. It is not easy to make it right in Windows. I found the solution in this post. Pay attention that so administrator uses should use C:\ProgramData\ssh\administrators_authorized_keys save authorized public keys.

$acl = Get-Acl C:\ProgramData\ssh\administrators_authorized_keys
$acl.SetAccessRuleProtection($true, $false)
$administratorsRule = New-Object system.security.accesscontrol.filesystemaccessrule("Administrators","FullControl","Allow")
$systemRule = New-Object system.security.accesscontrol.filesystemaccessrule("SYSTEM","FullControl","Allow")
$acl.SetAccessRule($administratorsRule)
$acl.SetAccessRule($systemRule)
$acl | Set-Acl

Tech

┌ Productivity

How to Scroll Horizontally?

I have switched to Logitech Trackball recently and it has no horizontal scroll wheel.

You can use the keyboard shortcut SHIFT+Mouse scroll wheel to scroll horizontally.
Learning by Doing and Becoming a Developer at GoodNotes: Bret’s Story

┌ Programming

❤️ How async should have been

Functional way to build function for both sync and async
Configure Docker Hub mirror in /etc/containers/registries.conf
Podman 1.4.4: permission denied mounting volume without “–privileged” flag

I have to pass --security-opt label=disable to mount local directory into the container.

An example to fix obsoleted gpg keys for apt repositories

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys

┌ Linux

How to generate locale in Slitaz

localedef -i ru_RU -c -f UTF-8 /usr/lib/locale/ru_RU.UTF-8

I use Fedora cloud version in WSL2 as the main distribution. By default it lacks the locale packages.
```
sudo dnf install glibc-langpack-en
```
Network modes in Parallels Desktop for Mac

The minimal distribution like Slitaz does not bundle the driver for vertio. The workaround is using the Intel (R) PRO/1000 MT network adapter first, install linux-kvm in Slitaz and then switch to vertio.
Patch for Kernel 5.6 | Parallels Forums

The Fedora 32 kernel is too new to install Parallels Gust Tools. Apply the patch in this thread first.

┌ Blockchain

干货 | 深入理解 OVM

Non-tech

┌ Business

@dhh: Wow. I’m literally stunned. Apple just doubled down on their rejection of HEY’s ability to provide bug fixes and new features…

About Apple Tax

┌ History

Misc

Obsidian, yet another non-linear note taking app.
Welcome! | minikube, a devops tool.
搭建家庭数据管理中心：QNAP NAS 应用指南
用开源免费的内网穿透工具 frp，实现远程桌面和文件传输

What I Touched This Week 2020-06-07

me@iany.me (Ian Yang) — Sun, 07 Jun 2020 00:00:00 +0000

This week I have installed Fedora 32 on Surface Go. I also switched to use GPG as my private SSH key.

There are several major issues to use Linux on surface:

The WIFI requires downloading the driver, see Surface Go: First Impressions : SurfaceLinux.
The camera does not work.
The headphone jack generates noise.

Use a GPG key for SSH

Using YubiKey Neo as gpg smartcard for SSH authentication - stafwag Blog

This article helped me setting up the Yubico key in Fedora. → Wiki
gnupg-agent: gpg agent refusing ssh agent work - Debian Bug report logs

I don’t know what it does, but when I have trouble I will try to run this
```
gpg-connect-agent updatestartuptty /bye
```
How to use a GPG key for SSH authentication | Linode

Tech

unicodes.txt

I create it from allkeys.txt so that I can use grep, fzf to search the code points.

┌ Vim

tags - quickfix Menu Usage With :tselect and :vimgrep - Vi and Vim Stack Exchange
- :ltag
settings - VIM Disable Automatic Newline At End Of File - Stack Overflow
```
:set binary noeol
```

┌ Programming

REPL Driven Design

So I’ve learned my lesson. REPL driven development feels easier and faster than TDD; but it is not. Next time, it’s back to TDD for me.
A note on commit messages

Non-tech

┌ Design

Bookmarks

Canvas, A sketch and handwriting web app .

┌ Tools that share and encrypt files

What I Touched This Week 2020-05-31

me@iany.me (Ian Yang) — Sun, 31 May 2020 00:00:00 +0000

I have read books 以眨眼乾杯 and 半小时漫画中国史（从东周列国到楚汉之争）.

A Git tip: set this on server to allow pushing to the clone on server:

git config --local receive.denyCurrentBranch updateInstead

It requires the server working directory is clean.

Tech

┌ Programming

Devhints — TL;DR for developer documentation

┌ Software Usage

Non-tech

┌ Business

HashiCorp Terms of Evaluation: “PLEASE NOTE THAT THE SOFTWARE MAY NOT BE USED, DEPLOYED OR INSTALLED IN THE PEOPLE’S REPUBLIC OF CHINA.”

┌ Hobbies

Panpiano ~~小P的音樂工房~~ — Panpiano ~~小P的音樂工房~~

Music scores for animations

┌ Life

Interesting

Bookmarks

What I Touched This Week 2020-05-24

me@iany.me (Ian Yang) — Sun, 24 May 2020 00:00:00 +0000

I have finished the book 白鹿原.

Tech

┌ Programming

Rust: Structuring and handling errors in 2020

The essential of the author’s recommendation is defining error num in library and use Box<Error> in application.
The Future of Swift on the Server

┌ Math

Catalan number - Wikipedia

┌ Academics

Peer Review – Rodney Brooks

┌ Network

为什么集群需要 Overlay 网络 - 面向信仰编程

┌ Apps

How to configure browserpass for Edge browserpass/browserpass-native#61
- Open regedit
- Create a folder in HKLM\Software\Google\Chrome\NativeMessagingHosts\com.github.browserpass.native
- Set default entry in the folder to C:\Program Files\Browserpass\chromium-host.json
电子表格的历史：除非你知道它从何而来，否则你将无法预测它将走向何方

Non-Tech

┌ Productivity

Stop Trying to Make Hard Work Easy

Traction is any action that pulls you toward what you want to do. By contrast, distraction is any action that pulls you away from what you planned to do.

[T]he time you plan to waste is not wasted time.

┌ Management

┌ Business

What Was TON And Why It Is Over

┌ Economics

Warren Buffett’s Optimistic? Pessimistic? No, Realistic

┌ Life

纱布可以这样更好的包扎伤口哦_好看视频

Misc

一位母亲在分娩时去世
- 母亲的心脏移植给别人了，当接受移植者抱起孩子的一瞬间太神奇了
How International Users Unwittingly Build up WeChat’s Chinese Censorship Apparatus

Bookmarks

Kami, a PDF annotation tool in Chrome
Google - Site Reliability Engineering
Basic Knowledge 101, a knowledge base

What I Touched This Week 2020-05-17

me@iany.me (Ian Yang) — Sun, 17 May 2020 00:00:00 +0000

I have written some scripts to visualize the knowledge base inspired by 如何交互可视化你的卡片式笔记网络？ - 少数派. Here is a demo.

Tech

┌ Algorithm

Quicksort - Wikipedia

The section “Using recurrences” proves the Big-O of quicksort.

┌ Blockchain

eth/63 fast synchronization algorithm by karalabe · Pull Request #1889 · ethereum/go-ethereum

┌ Visualization Tools

┌ Security

gocryptfs

Mount encrypted files via fuse.
Troubleshooting Issues with GPG : Yubico Support

Fix for scoop installed gpg by creating file %USERPROFILE%\scoop\apps\gpg\current\home\scdaemon.conf:
```
reader-port Yubico Yubi
```

┌ Machine Learning

The Nooscope Manifested

┌ Computer Architecture

@xxuejie: A New Golden Age for Computer Architecture

Non-tech

┌ Productivity

┌ Business

腾讯的背水一战

┌ Social

聊天时用上这5个小技巧，能让人瞬间对你产生好感！
Bye, Amazon

I quit in dismay at Amazon firing whistleblowers who were making noise about warehouse employees frightened of Covid-19.

┌ Game

关于 Xbox Series X 和 PlayStation 5，目前你能了解的都在这里

Interesting

@localhost_8080: 昨天是某位老父亲的生日，老夫老妻的了也不知道准备点啥礼物好…就前一天拿他号登了动森，换了衣服、布置了房间

Bookmarks

Canva在线平面设计软件_免费设计模板素材和海量正版图片 - Canva中文官网

What I Touched This Week 2020-05-10

me@iany.me (Ian Yang) — Sun, 10 May 2020 00:00:00 +0000

I have

reviewed my setup in Windows and shared several posts about it.
enrolled CS166: Data Structures.
switched to pass to manage my passwords.

Windows Setup

Recently, my colleagues showed interests working in Windows, so I reviewed my setup and published two posts.

I also shared my config files in gist.

PowerShell is really funny to play around.

Inspired by Windows snap move keyboard shortcuts, I have implemented a similar one in Keyboard Maestro for macOS.

doitian/km-windows-manager: This is a group of Keyboard Maestro macros to move windows in a way inspired by Windows snap move shortcuts.

Some Git repositories contains symbol links, which does not work in Windows, here is a solution to replace them with Junction.

Git Hooks to Convert Symbol Links in Windows

Tech

Delete all the passphrases saved in the macOS Keychain
gyp: No Xcode or CLT version detected macOS Catalina | Anansewaa
- I have to reinstall Xcode command line tools to make nodejs happy.
Big-θ (Big-Theta) notation (article) | Khan Academy
Notes on io-uring
vim - Creating ctags extension for markdown - Stack Overflow
GitHub Protips: Tips, tricks, hacks, and secrets from Lee Reilly - The GitHub Blog

Interesting Stuffs

Bookmarks

What I Touched This Week 2020-05-03

me@iany.me (Ian Yang) — Sun, 03 May 2020 00:00:00 +0000

I have

Completed the course Game Theory II on coursera.
Read the book 屍人荘の殺人

Technology

Testing sync at Dropbox

Nearly all of our code runs on a single “control” thread.
Rewriting the heart of our sync engine - Dropbox
How to write CRaP Rust code
Rust Performance Pitfalls — Llogiq on stuff
Ramblings on languages and architectures (was Re: any benefit to throwing off lua51 constraints?)
Books I recommend to my software engineering students - Austin Z. Henley

Productivity

More on Cultivating a Deep Life: Mindset
- Do less
- Do better
- Know why
Here’s the One Thing You Need to Do to Learn More About Anything

Land on just one you have an interest in or need to know, and then just stay there a while.

Content Creation

Sp 006 幕后故事：回形针是怎么做视频的

聊聊我们（回形针团队）是怎么工作的，都会在什么环节犯错，以及对于这些问题的看法。

Funny

RT @hanawa_hinata: 搬家的时候不要让六个人一起搬沙发。 https://t.co/Sxut5OtPyE
@NeverBehave: 是我了 https://t.co/cdZZoiZ5JG
- Documentation, stack overflow and me
@szfuqi: 没听过老式打字机担纲独奏的协奏曲吧？来来来，一起开开眼

Bookmarks

What I Touched This Week 2020-04-26

me@iany.me (Ian Yang) — Sun, 26 Apr 2020 00:00:00 +0000

I have published two posts.

I shared one link:

Good Books | Books recommended by successful people

Experiment Working on iPad

Mosh and firewalls: How to tunnel all mosh/ssh traffic through a proxy - engageSPARK

60000-61000
@doitian: Hi @quip, your app cannot edit spreadsheet, could you just let me use it in the browser?
How to disable the keyboard toolbar on ipad OS? - iPadOS

Try turning off Shortcuts under General -> Keyboards. I disable it and Predictive.

Programming

Yarn Debian key expiry date updated (EXPKEYSIG 23E7166788B63E1E) · Issue #7866 · yarnpkg/yarn
```
sudo apt-key adv --refresh-keys --keyserver keyserver.ubuntu.com
```
How to Do 90% of What Plugins Do (With Just Vim)

Linux/UNIX: Bash Read a File Line By Line - nixCraft

#!/bin/bash
input="/path/to/txt/file"
while IFS= read -r line
do
echo "$line"
done < "$input"

Technology

Design

Productivity

Funny

安定医院郝不了大夫 (@luis69225222): 那我就不是很能谅解了

Bookmarks

What I Touched This Week 2020-04-19

me@iany.me (Ian Yang) — Sun, 19 Apr 2020 00:00:00 +0000

Picks from last week:

@coolXiao: 「Λ-Reading」是我唯二订阅的中文 Newsletter
Do not log

Logging is not cheap, and sometimes there are better alternatives.
CS Visualized: Useful Git Commands
Error Handling in a Correctness-Critical Rust Project
- “The most successful efforts finding the most bugs boiled down to randomly causing different operations to fail”
- “Keeping errors that must be handled separately in their own types”
- sled/fail.rs
- sled/test_tree_failpoints.rs

Technology

Productivity

Life

Perfect Posture in 5 Steps (BAD POSTURE BUSTER!)

Funny

What I Touched This Week 2020-04-12

me@iany.me (Ian Yang) — Sun, 12 Apr 2020 00:00:00 +0000

I have published a post about ♯ Rust Pin.

Shared Links

Diviner: A New Attempt on Deterministic Testing

This is a post from my friend who has started a new project to implement a FoundationDB style deterministic simulation testing tool in Rust.
Bilinear Accumulators for Cryptocurrency Enthusiasts

Easy to read article about the bilinear accumulator. It is also the preliminary reading to help understanding more complicated accumulators.
Timeless on Setapp | Reduce time anxiety and stay focused.

I love the idea of this new app comming to Setapp recently. It shows me an indicator of the current time slot.
CORE – Aggregating the world’s open access research papers
无暇看手机的时候，你可以这样听文章

手机上专门下了 Pocket 就为了有时候听听阅读列表里的文章

Programming

Productivity

Technology

Other

Funny

What I Touched This Week 2020-04-05

me@iany.me (Ian Yang) — Sun, 05 Apr 2020 00:00:00 +0000

I have read the book 水母不会冻结.

Technology

KeySpace: End-to-End Encryption Using Ethereum and IPFS
firefox’s low-latency webassembly compiler

Web browsers therefore take a two-pronged approach: they have a compiler optimized for throughput, and a compiler optimized for latency.
When debugging, your attitude matters
Reducing tail latencies with automatic cooperative task yielding · Tokio
Inviting God’s Wrath with Cursed Rust

How to tune the memory size of Cow.
How I structure my apps (in Rust and other languages) — Dawid Ciężarkiewicz aka `dpc`
sync: new internal semaphore based on intrusive lists · tokio
Two Years With Rust - Marc’s Blog
so long rust, why i built ZZ – Arvid E. Picciani – internet connected microelectronics | Founder of devguard

Methodology

Zettelkasten — How One German Scholar Was So Freakishly Productive
- Always link your notes
- Explain why you’re linking notes
- Use your own words
Why You Need To Start Using A Decision Journal

COVID-19

Funny

Bookmarks

What I Touched This Week 2020-03-29

me@iany.me (Ian Yang) — Sun, 29 Mar 2020 00:00:00 +0000

I have published a post ♯ Fix iOS App Store Family Purchase Sharing this week.

This weekend I have participated an internal Hackathon, here is my project.

Blockchain

What Do We Mean When We Say Account Model? It is widely believed in the blockchain world that account model has advantages over UTXO model in terms of usability, and I’ve been working on bridging the differences between UTXO model and account model in a blockchain. There is some initial attempt on the problem.
Introducing Godwoken - A missing piece of the cell model

Tech

How to Learn Rust Without Installing Any Software

Github Actions
I love, love, love this person’s reaction to reading the blog post about cross-compiling …

Andrew Kelley (@andy_kelley): I love, love, love this person’s reaction to reading the blog post about cross-compiling. It’s not really that amazing actually. It works, not because of some great new feat, but because of the very nature of the Zig project as a sort of “reboot” of systems programming.
Rust Async and the Terrible, Horrible, No Good, Very Bad Day
- There’s “magic” happening there, and I dislike implicit magic.
- It is possible for a single dependency of your crate to be so tightly coupled to a future polling runtime that it effectively makes that runtime mandatory for all consumers.
Find dead symbolic links Using find
```
find -L -type l
```

Note Taking

也许是 YouTube 上最好的 iPad note taking 系列…

Happy Xiao (@coolXiao): 也许是 YouTube 上最好的 iPad note taking 系列，推荐这个YouTuber。起初以为是在介绍使用 app，看到一半发现是在讲学习方法，到最后升华成励志大片
How I Take Notes with My iPad Pro in Lectures (Notability & GoodNotes) + Free Template

Today we’re going through How I take Notes on the iPad Pro, using Notability and GoodNotes
@coolXiao: 「笔记之王」（雾）- Tiago Forte 最近一次性放出了他的播客「Building a second brain」第一季的全部11

COVID-19

日本凭什么没下地狱？

这个没有流行性病毒也保持54%口罩佩戴率的族群，这个人们习惯于日常“咳嗽礼仪”，保持高频洗手洗澡习惯的族群，这个不喜欢张大口说话、不进行身体接触式问候的族群，这个饭店基本提供湿毛巾，公共场所必有干净卫生间的族群……可能就是日本不至跌落地狱的最大底气。
抢购美元：全球危机的危险信号

Bookmarks

@coolXiao: The Sweet Setup 的站长 Shawn Blanc 放出了他的价值247美金的时间管理课程供大家免费注册学习，共克时艰。我已注册，无需付款方式，终身有效。Free Time Management Course from Shawn Blanc Happy (@coolXiao): The Sweet Setup 的站长 Shawn Blanc 放出了他的价值247美金的时间管理课程供大家免费注册学习，共克时艰。我已注册，无需付款方式，终身有效。 Free Time Management Course from Shawn Blanc
Seastar - Seastar Seastar is an advanced, open-source C++ framework for high-performance server applications on modern hardware.
@WongJian42: 想买的链接在此：手机蓝牙自拍遥控器无线拍照红外线远程控制多功能抖音快手翻页拍摄照相苹果安卓通用视频录制快门万能神器

Funny

@doitian: RT @ailoysl: 西部牛仔拔槍都沒這麼快！ https://t.co/c4NLXqr7fm Ian Yang (@doitian): RT @ailoysl: 西部牛仔拔槍都沒這麼快！ https://t.co/c4NLXqr7fm
@Terry721831: #觀點這注意不錯泰國有一位慈父在疫症下非常擔心好動的兒子不想兒子在街上流連惹上肺炎就立即為兒子剪了一個不能出街的髮型大家可以考慮一下這髮型無論男女應該會自我隔離超過14天 Terry (@Terry721831): #觀點這注意不錯泰國有一位慈父在疫症下非常擔心好動的兒子不想兒子在街上流連惹上肺炎就立即為兒子剪了一個不能出街的髮型大家可以考慮一下這髮型無論男女應該會自我隔離超過14天
@mashable: It’s so tiny! https://t.co/gdfufsld2O Mashable (@mashable): It’s so tiny! https://t.co/gdfufsld2O

What I Touched This Week 2020-03-22

me@iany.me (Ian Yang) — Sun, 22 Mar 2020 00:00:00 +0000

I have

read 呼吸 by Ted Chiang.
published ♯ Fix iOS App Store Family Purchase Sharing.

I shared

Git: Diff per word or character
```
git diff --color-words
git diff --color-words=.
```
Useful to double check the changes in a very long line.
Array Formula Examples – Simple to Advanced

Array formula can do vector/matrix computation without storing the intermediate results in cells.
What do we do when you lose your 2FA codes?

The author recommends 2 trustworthy ways to prove you are you:
1. You own a PGP/SSH private key
2. You own the domain
iTerm2 Utilities

iTerm2 has some interesting utilities. For example, it2dl/it2ul allows you transferring files in an SSH session.
@Philo2018 recommended YouTuber Alphonso Dunn to learn painting.

频道简直太棒了！三言两语就能把很多规律和技巧讲清楚，讲解足够细致，对初学者足够友好，还没有废话。这就是真正优秀的老师。

Blockchain

Intro to Beam Sync - Jason Carver - Medium
- Beam Sync starts by executing the launch block, and only requests state data that is missing from the local database. Lazy download
- we run another process in the background which fills these gaps.

Engineering

Good times create weak men @ tonsky.me
- Knowledge does not automatically transfer to the next generation.
- In programming, we are developing abstractions at an alarming rate. When enough of those are stacked, it becomes impossible to figure out or control what’s going on down the stack.
Software disenchantment @ tonsky.me
Guide on how to write documentation for a Rust crate

Reading

How to build trust on a remote team Whenever folks transition to remote work, they often ask me about accountability. How do remote managers know their people are working? And how can remote employees show their bosses that they’re getting stuff done?
Online teaching with the iPad and GoodNotes Universities across the globe are reacting to the spread of Coronavirus and are either suspending the start of the new year or announced to teach all classes virtually until further notice.
Apple Fixes the iPad Pro’s Biggest Problem - Lance Ulanoff - Medium
The History of the URL

COVID-19

我在泉州隔离酒店废墟下的69小时33分
方方和易中天：文人的脊梁，学者的骨气

有人问，常识到底是什么？举个例子，比如一只狗跑来咬你，你拿起打狗棒，打狗。狗逃回去，叫了一群狗过来咬你，其中还有大狗和疯狗。这时候，常识会告诉你：闪人！把地盘留给狗。让它们自己狂吠，过不多久，它们就会因为吠声高低不同骨头分配不同，而相互自咬。而你呢，在家喝茶看书下馆子。像隔离病毒一样，与会咬人的群狗隔离，这就是常识。
英国疫情，钱和那些人
Hao Chen (@haoel): 疫情在全世界爆发后，总会看到嘲笑别国的做法的观点，觉得别国都应该来抄中国的作业。我们前期的失误，其实是需要反思的。而我们后期的有效，别的国家也是学不来的——体制和国情不同。何况，这是场灾难。不管是嘲笑别国疫情蔓延，还是猛夸自己国家棒，其实都是对灾难和逝者的亵渎。 —— 张文宏
Recognizing Ignaz Semmelweis and Handwashing Today’s Doodle follows the official guidelines on how to properly wash your hands from the World Health Organization.
@doitian: RT @mranti: 美国国务卿彭佩奥是自川普之后，又一个美国政客正式称呼新冠病毒为Chinese Virus。我觉得大家得记着这些名字，我们在中国抨击自己政府错误的同时，也别忘了是哪些美国人以种族主义攻击我们。我们学习和尊重美国，是因为马丁路德金、肯尼迪 …

Funny

Baye (@waylybaye): 大部分语言开源项目的 README vs Rust 语言开源项目的 README
@tyomateee: 後ろ姿は完全に少女
To be, or not to be (@not_2b_or_2b): 在股票市场，一般账户里只有0-50万的人，会天天驾人。 50-100万的人，不怎么讲话，会专心研究股市。 100万以上的人都会很嫌虚，别人问起来都会说，我是菜乌、不怎么懂。我刚进股市的时候很谦虚，后面慢慢开始研究股市，直到现在变的也开始骂人了
@luinlee: 每一次新 iPad 发布我都会看一下这个 issue: “今天 VS Code 支持 iPad 了吗？”
@williamwoo7: 谁是妈妈最爱的儿子？CNN主播采访扭腰州长新闻直播演变成了兄弟二人争宠吵架现场……对，没错，他们是亲兄弟我们电视台是不带干私活的

Bookmarks

What I Touched This Week 2020-03-15

me@iany.me (Ian Yang) — Sun, 15 Mar 2020 00:00:00 +0000

I have:

Published a new post ♯ Save Web Articles via Inoreader.
Completed the course Game Theory.
Read the book The Most Dangerous Game.

Picks

让每一次听讲都有所收获：我的讲座笔记经验分享 - 少数派
- 速记
- 使用自己的语言总结
- 方便寻回 (recalling)
- 定时复习
Taking Notes
Final Cut Pro X Essentials

Learned many FCP shortcuts and tips here.

♯ Final Cut Pro

Programming

I read may articles about Go and Rust last week.

The Zen of Go | Dave Cheney
Early Impressions of Go from a Rust Programmer | TiDB
The Rust Compilation Model Calamity | TiDB
Channel Axioms | Dave Cheney
amos - I want off Mr. Golang’s Wild Ride
- when you make something simple, you move complexity elsewhere.

And several about databases.

Millions of tiny databases This paper is a real joy to read. It takes you through the thinking processes and engineering practices behind the design of a key part of the control plane for AWS Elastic Block Storage (EBS): the Physalia database that stores configuration information.
Choosing the Right Database for Your Applications Shopee is the leading e-commerce platform in Southeast Asia and Taiwan. It is a platform tailored for the region, providing customers with an easy, secure, and fast online shopping experience through strong payment and logistical support.
Characterizing, modeling, and benchmarking RocksDB key-value workloads at Facebook

Blockchain

Animagus Part 1: Introduction - Nervos Network - Medium
- How to Pronounce Animagus
突破区块链不可能三角（五）—— 闪电网络，链下技术，以及它们的局限性 - 知乎
突破区块链不可能三角（六）—— 吹个关于区块链活性的哨子 - 知乎
Digital Democracy and Governance 2.0 The term “Governance” is an umbrella term that covers ways and processes on how we coordinate on scale. How we organize our societies, define and enforce rules and make collective decisions. Today our coordination relies mostly on governments and private companies protected by enforceable laws.
The trust machine BITCOIN has a bad reputation.

Productivity

How snippets make me more efficient at work…and dating I may seem efficient, but really, I’m just good at using snippets. Snippets are a form of text expander—they’re basically a fancy version of autocorrect, which allow you to type some small amount of text and have way more text appear.
How to Be a Productivity Ninja: Attention management In any knowledge work job, you’re really playing two different roles at once: you’re simultaneously the “boss” and the “worker”. You’re responsible for:
如何管理自己的时间资产时间是我们最重要的资产，对时间的使用和管理决定了我们的个人成长。人的注意力是有限的，我们不能将同一份时间投入到不同的事情中，一旦选择花费时间做一些事情，就不得不放弃做其他事情的可能性。如果我们能够静下
打造一个高度自动化的在线阅读流程，我用 Instapaper + Pinboard 做到了注：本文参与少数派 2019 年度征文「效率有心得」赛道。缘起用粉丝的话来说，我一直都是 Instapaper 的白嫖粉，喜欢、享受，但不花钱。作为一个重度阅读爱好者，我至今没有买 Instapaper 或 Pocket Premium 的原因很简单，连接不
Slack etiquette at Zapier With hundreds of employees chatting every day, Zapier’s Slack is a busy place. To keep things under some semblance of control, our People Ops team put together a guide to Slack etiquette at Zapier.

Reading

Maximize your team. How I created an Engineering Roadmap – John Graham – Director of Software Engineering at Miles Technologies. Philadelphia area Angular and .NET developer.
一位匠人的中州韵——专访Rime输入法作者佛振（图灵访谈）弓辰，号佛振，出身地是河南郑州以北十里弓家寨，在北平做码农。佛振是「Rime／中州韵」输入法引擎的开发者，它不仅仅是一个输入法，也是一个输入法算法框架，这一套算法支持了拼音、双拼、注音、五笔、仓颉等所有音
- 对一个匠人来说，创作一件有情调的作品，一定是出于对精湛技艺的追求。如果仅仅是为了现实目的，固然可以写出高质量的软件，代码本身却容易缺乏灵气。
- 编程的乐趣在于享受这份创造的快感：他不只是在敲代码，而是在开动脑筋调教程序，增益其所不能。
为什么杨振宁在唁电中说戴森该获诺奖 | 自由者戴森（上）微信号 mrscience100 功能介绍启蒙，探索，创造。一年后，我去教伟大的奥本海默怎么做物理。戴森。图源：Wikipedia.

COVID-19

Recommendation from Subscriptions

@tualatrix: 又买了本新书《转型中的地方政府：官员激励与治理》（第二版）。在 @KindleBookDeal 上看到书名时就好奇了一下，去豆瓣搜了下：9.3 分，于是立马下单了。最近书多的看不完了…看不完才好
@novoreorx: 向所有 macOS 用户推荐 QSpace，迄今为止最好用的 Finder Replacement。已使用一周并删掉了 Commander One Pro, TotalFinder 等老劣产品。昨天又有一大波更新，加入了批量重命名和文件堆叠（类似 Yoink）等功。我现在只想给作者再塞点钱，定价真的低了
「死亡搁浅」游戏产业的革新之作 – 精神病患者阅读室这是我第一次在博客中写关于游戏的内容，以后会将游戏与影视作品等归类为流行文化的分类中去进行阐述，这个分类中的所有文章都将包含一定剂量的剧透，请酌情阅读。

Photography

Misc

What I Touched This Week 2020-03-07

me@iany.me (Ian Yang) — Sat, 07 Mar 2020 00:00:00 +0000

I published 1 post last week: ♯ Blocking Stdout

Printing to stdout may block the thread. Close the pipes if you want to run a child process but don’t care its output.
Blocking inside async code | Stjepan’s blog

Productivity

作为一名本科生，我如何用 MarginNote 3 拆书 MarginNote 3 使用心得
建立良好的制表习惯，我克服了「Excel 恐惧症」两年前，当我在简历上写下「熟练使用 Excel」并将它递到一家家公司求职时，内心可以用毫无底气来形容。一方面，我简直对数字毫无敏感度（事实证明这种感觉可以通过重复和刻意练习来培养）；另一方面，彼时的 Excel 在我
2019 我的写作桌面清单推荐文具推荐

Funny

What I Touched This Week 2020-02-29

me@iany.me (Ian Yang) — Sat, 29 Feb 2020 00:00:00 +0000

In the last week, I have posted 2 articles and recommended two web pages.

♯ Excel as Diagram Maker
Paste Markdown as Code Block in Evernote
Mundo - Visualize your Vim Undo Tree I use Gundo before. This one can search though the changes history.
nervosnetwork/slice-cheatcheat The trivial differences in the slice syntaxes are really disturbing when switching programming languages.

What Helped Me to Build the Blog

I have migrated a Ghost theme to Hugo for my blog.

reuixiy/hugo-theme-meme I often lost how to do a thing in Hugo. This theme often helps me to find the way.
Ghost Theme Features: The Editor - Documentation Since I migrated the theme from Ghost, this is a good reference to create the Hugo template which matches the CSS.
The best Favicon Generator (completely free) | Favicon.io I use this to generate a new favicon.
Taxonomies | Hugo
- I want to keep the “post” section before others in the home page, so I can create the file content/post/_index.md and set weight to -99 in Front Matters.
Hugo introduces page resources and image processing in newer versions. I can keep the images along with the post and it is also possible to resize the images to create responsive src set.
Custom Search Element Control API | Google Developers
- I use Google Custom Search in my blog. The API allows me to trigger the search by JavaScript.
  - Use google.search.cse.element.getElement to find the element and use element.execute('news') to start a search.
  - Setup the callback __gcse.searchCallbacks.ready to process the search result, and return true in the callback to prevent rendering the HTML in its own search page.
  - Hide the custom search box and result page via CSS.

What I Have Learned

zsh: File Expansion The extended file expansion is useful in zmv.
Printing a sequence of letters or numbers | Shell Tips!
```
echo {a..g}
```
Excel Array Formula Examples – Simple to Advanced

Ctrl+Shift+Enter
4 Ls Exercise The 4 L’s exercise is designed for YOU as a LEADER or ROLE MODEL. How do you be the best version of YOU. Start by doing it for yourself first and then do it as a team.
5 fun sprint retrospective ideas with templates - Work Life by Atlassian
Waveform – FFmpeg
- A list of examples on how you can use filters to make visual representations of audio using ffmpeg
Using Filename Template Editor in Lightroom Difference between Sequence # and Image #
OpenPGP - The almost perfect key pair | Blog Eleven Labs
Geometric progression - Wikipedia I have to use the formula to find the solution of a quiz in the Game Theory course.
```
 $\sum _{i=1} ^{n} {ar^{i-1}} = \frac{a(1 - r^n)}{1 - r}$ 
```
When p is between 0 and 1, and the sequence is infinite, the sum is
```
 $\sum _{i=1} ^{\infty} {ar^{i-1}} = \frac{a}{1 - r}$ 
```
How To Correctly Use AP (and APA) Style Title Case

What I Have Read

新冠病毒疫情与本世纪其他传染病疫情（非典，猪流感，中东呼吸综合症，埃博拉）时间点对比

Funny Things

@sprezzaa: 哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈天津出租车
I Draw Like A Printer ( Drawing Will Smith ) - DP Truong

Many people say that I can draw as if I were a printer. However, I think I still don’t paint like a real printer. Today I’m going to draw the same way a printer does.

Bookmarks I Saved

yudai/gotty Share your terminal as a web application
Download Editable Video Templates - Envato Elements
Premiere Pro and After Effects Templates, Stock Music, and more. | Motion Array

What I Touched This Week 2020-02-16

me@iany.me (Ian Yang) — Sun, 16 Feb 2020 00:00:00 +0000

Featured

✒️ ♯ Bitcoin Core Network Event Loops

This is a guide about how bitcoin-core handles network messages in the source code.
The Feynman Technique: How to Learn Anything Quickly “Why teaching is the key to understanding”
- Choose a concept to learn
- Teach it to yourself or someone else
- Return to the source material if you get stuck
- Simplify your explanations and create analogies
Podcast Editing Demo - Ferrite + iPad + Apple Pencil demonstrates how to edit a podcast on iPad using Ferrite Recording Studio.
- 00:59 Strip silence
- 01:39 … the stripped silence defaults
- 03:42 Double tap selects everything forward in a single track.
- 04:13 Tapping with two fingers to play and pause
- 02:19 Quick delete with pencil to swipe from right to left
云风的 BLOG: git shallow clone 的一个问题网络抖动和无法断点续传是国内使用 Git 的痛点。之前的做法是服务器上 clone 后把 .git 压缩打包下载回来。随便找了个库对比了下，bzip2 12M, git bundle 11M，打包和恢复速度也快得多。
- git bundle create bundlefile --all
- git bundle unbundle bundlefile
- git 还不知道是 shallow clone 。好在这个文件很简单，就是 HEAD 的 hash 。手工创建一个就好了。
技术文章配图指南
- 选择合适的工具，一定要支持模版或组件库统一配色和风格
- 直接在配图里添加标题方便单独分
- 固定宽度，长度可变

Zero Knowledge Proof

Programming

After memory safety, what do you think is the next big step for compiled languages to take?
- usable module system
- error management
- The boundary between synchronous-world and asynchronous world
Write code that is easy to delete, not easy to… — programming is terrible

“Every line of code is written without reason, maintained out of weakness, and deleted by chance” Jean-Paul Sartre’s Programming in ANSI C.
JuliaLang: The Ingredients for a Composable Programming Language
- Multiple Dispatch: Open overloading via pattern match
关于 Go1.14，你一定想知道的性能提升与新特性

Blockchain

Bitcoin’s Initial Block Download
- Running the scripts is still the bottleneck of IBD.
- Bitcoin Core 0.12.0 performs well in the above analysis because:
  - libsecp256k is enabled.
  - it does not validate signatures for transaction inputs where the witness is segregated.
P2P Network Guide - Bitcoin
- The primary disadvantage is that the IBD node relies on a single sync node for all of its downloading.
- All of these problems are addressed in part or in full by the headers-first IBD method used in Bitcoin Core 0.10.0.
  
  Sync headers with single sync peers, but download concurrently from multiple peers.
Kevin Wang: Nervos – Scaling Smart Contact Blokchains With Proof of Work and Generalized UTXO
嘉楠耘智一天上涨 82%, 南瓜张邮件透露了什么？
- 嘉楠耘智筹备进军基于互联网的算力销售，有的人喜欢把这类业务称为"云算力"

Productivity

SET 法则：过好每一天的时间管理之道
RICE: Prioritization for product managers | Inside Intercom RICE is a scoring system for prioritization
- Reach
- Impact
- Confidence
- Effort
- How is a RICE score calculated? RICE = RIC/E

COVID-19

经历了这次疫情的考验，这些健康、生活、效率习惯值得你长期坚守 - 少数派
- “手边常备的健康仪器和药物”
  - 消炎药和抗生素不可混用，抗生素更不可滥用。两者之区别请见这篇文章和这篇文章；
  - 家庭常备、没事儿就翻翻、用药之前先查一下、不要听爸爸妈妈姑姑二大爷老中医建议而是先看一看它的健康资讯来源：丁香医生、腾讯医典和默沙东诊疗手册，三者均有独立 App。
- “我最常用的两款电子产品清洁装备是 iKlear 的清洁套装和 AM 的清洁套装。”
- “我推荐每个人都买一个紫外线消毒灯，平时放在没人的房间开上半个小时，杀毒效果极佳。”
家里有孩子，备好这些家庭常备药！ - 丁香医生
隔离中的“钻石公主号”邮轮
“亚洲霍乱”背后的恐惧，不止关于死亡
五年远程办公经验告诉你，疫情当前，怎样远程才舒坦？ - 少数派
【霍尼韦尔1400021-M-44】EasyChem内置式重型防化服 P4 防护

Bookmarks

停工停课不停学，向你推荐 7 门有趣实用的线上课程 - 少数派
京东云不限流量4G路由吉客猫
- 每天 20G 高速流量 + 20G 中速
- 30天 79 90天 199 半年 299 一年 499
go.dev

What I Touched This Week 2020-02-09

me@iany.me (Ian Yang) — Sun, 09 Feb 2020 00:00:00 +0000

My Posts

Zero Knowledge Proof

Zero-Knowledge Proofs: A Layman’s Introduction - Aventus Network
Efficient Cryptographic Arguments and Proofs – Or How I Became a Fractional Monetary Unit – Bentham’s Gaze
What is a zero-knowledge proof? | Zero-Knowledge Proofs
区块链学习笔记 (1)：零知识证明的江湖 - 知乎
- “第一类协议中，在零知识证明协议部署前，需要一台机器生成一些初始参数，这些参数将在每一次证明与验证中被用到。参数生成后，参数生成算法运行中使用的所有数据必须销毁，否则整个协议将不安全。协议的安全性依赖于一台机器的数据销毁，那么最简单粗暴的想法就是在所有人的见证下毁掉这台机器。”
zkPoD:区块链，零知识证明与形式化验证，实现无中介、零信任的公平交易 - 知乎
零知识证明：一个略微严肃的科普 - 知乎
从零开始学习 zk-SNARK（一）——多项式的性质与证明 - 知乎
- “如果我们有两个阶为 d 的不相等多项式，他们相交的点数不会超过 d。”
从零开始学习 zk-SNARK（二）——多项式的非交互式零知识证明 - 知乎

Blockchain

Joel Monegro’s serial about fat protocols and thin clients
为什么比特币可以防篡改 - Why’s THE Design?
Optimistic vs. ZK Rollup: Deep Dive 链闻: Optimistic Rollup 支持通用合约，短期内能上线。ZK Rollup 不需要挑战，但是目前还不支持通用合约。
- “大部分现有的代码库都可以轻松移植到 Optimistic Rollup 上。”
- “大型区块的欺诈证明可能需要比 Layer 1 区块 gas limit 所允许的更多的 gas。那么，这些欺诈证明必须被分解为多个 ETH 交易。”
观点 | 生产性资产的质押获利模型 » 论坛 » EthFans | 以太坊爱好者

Rust

COVID-19

❤️ Sp. 005 Everything about the Novel Coronavirus (2019-nCoV)
❤️ 【BBC】人体的奥妙细胞内部隐藏的生命暗战_腾讯视频
❤️ Bill Gates: The next outbreak? We’re not ready What we need to prepare for the next epidemic.
Philosophia哲学社: 对本次疫情的结构性反思：谣言、官僚和国家主义（上）
Philosophia哲学社: 对本次疫情的结构性反思：谣言、官僚与国家主义（下）
宝坻百货大楼疫情、东丽一家三口疫情警示了我们什么？
传统中医药，能治新冠病毒肺炎么？_手机新浪网对于有效的处方需要分析远离，提炼疗法
网易号｜五痴生活：清朝的那一场大瘟疫，是如何变成赞颂皇帝圣明的 | 中国数字时代
统计数字之外的人：他们死于"普通肺炎"？
江浙沪人民应该感到幸福，看看武汉和长三角的差距
如何自助 —— 助人即助己

References

Custom Vim Functions to Format Your Text Use vimscript to automate file editing.
Reset NVRAM or PRAM on your Mac - Apple Support
How to reset the SMC of your Mac - Apple Support
印象笔记高级检索语法
TextExpander Help: Date, Time, and Math Macros
- UTS #35: Unicode LDML: Dates Textexpander date format reference
Note Links - Evernote Developers
Restoring Hazel from backups – Noodlesoft
Uniq - Removing duplicate lines | Vim Tips Wiki | Fandom
- “:sort u”
Here’s A Collection Of Apps Every Mac User Should Be Aware Of

Bookmarks

❤️ RSSHub Radar - Chrome Web Store Awesome Chrome extensions to discover RSS
❤️ JetBrains Mono: A free and open source typeface for developers | JetBrains: Developer Tools for Professionals and Teams
Sci-Hub: устраняя преграды на пути распространения знаний
Protocol documentation - Bitcoin Wiki
MDS: 3XX | LibraryThing
OCLC Classify – an Experimental Classification Service
~~rixcloud.com~~ 已经停止服务
Proxifier - The Most Advanced Proxy Client
Morning Edition : NPR

What I Touched This Week 2020-02-02

me@iany.me (Ian Yang) — Sun, 02 Feb 2020 00:00:00 +0000

Zero-knowledge Proof

The Incredible Machine - QEDIT - Medium
1998 - Jean-Jacques, Louis - How to Explain Zero-Knowledge Protocols to Your Children.pdf
Zero Knowledge Proofs: An illustrated primer – A Few Thoughts on Cryptographic Engineering
- “Thus if the amount of information I can extract is identical in the ‘real experiment’ and the ’time machine experiment’, yet the amount of information Google puts into the ’time machine’ experiment is exactly zero — then this implies that even in the real world the protocol must not leak any useful information.”
Zero Knowledge Proofs: An illustrated primer, Part 2 – A Few Thoughts on Cryptographic Engineering
- “We’re asking that a protocol be both sound — meaning that a bogus Prover can’t trick some Verifier into accepting a statement unless it has special knowledge allowing it to prove the statement — but we’re also asking for the existence of an algorithm (the simulator) that can literally cheat. Clearly both properties can’t hold at the same time. The solution to this problem is that both properties don’t hold at the same time. "
- “A knowledge extractor (or just ‘Extractor’ for short) is a special type of Verifier that interacts with a Prover, and — if the Prover succeeds in completing the proof — the Extractor should be able to extract the Prover’s original secret.”
- “The Extractor is not required to exist during a normal run of the protocol.”
初识「零知识」与「证明」 - SECBIT Blog
- “零知识证明是打通链上数据与链下计算的关键技术，也是实现链上数据隐私保护的重要途径”
- “证明不仅仅是一个严格推理，而且凝结了似乎很难机械化的创造性思维。证明中蕴含了大量的「知识」，每一次的突破，都将我们的认知提升到一个新的高度。”
从「模拟」理解零知识证明：平行宇宙与时光倒流 - SECBIT Blog
读心术：从零知识证明中提取「知识」 - SECBIT Blog
亚瑟王的「随机」挑战：从交互到非交互式零知识证明 - SECBIT Blog

Blockchain

The Schnorr/Taproot proposal is now published as BIPs 340, 341, and 342
How the Nervos CKByte Gets its Value

This is a core question for any decentralized project, and it’s one we’ve thought carefully about in designing the CKByte as the protocol token of the Nervos Network. Ultimately, we believe a token’s value is derived from its core function or utility.
Sunsetting Mist - Alex Van de Sande - Medium

Why Mist team no longer builds a single app
以太坊二层扩容之路：Plasma 衰落与 Rollup 崛起 - 链闻 ChainNews
- “第一个问题是，每个用户必须监控和验证 Plasma MVP 链上的所有交易，以检测恶意运营商的行为并及时退出。然而，事务验证成本高昂，并且这种监视需求为参与 Plasma 链增加了大量开销。”
- “考虑到 Plasma 链可以任意增长，而以太坊区块已经接近其容量，几乎不可能将整个 Plasma 链倾倒到以太坊的主网上。因此，几乎可以肯定的是，大量退出会把以太坊挤爆。这就是所谓批量退出问题。”

COVID-19

The Lancet Coronavirus

“This hub page will house all articles, comments, and editorial…
Complexity of the Basic Reproduction Number (R0) - Volume 25, Number 1—January 2019 - Emerging Infectious Diseases journal - CDC
新型冠状病毒的来龙去脉
试剂盒困局：为何确诊这么难？
武汉封城后，这支上海的队伍进去了！沪首批重症和呼吸科医师已出征，今夜到达
Noisy Turtle (@NoisyTurtle2600): Updated Wuhan #2019-nCoV cases compared with other viruses. I managed to find some numbers on MERS, but that disease didn’t rapidly rise from 100 like Wuhan, SARS and Swine Flu has. Lower cases and higher fatality rate makes that more like the two Ebola viruses (EVD). Tweet
方舟子 (@fangshimin): 《柳叶刀》总编呼吁媒体不要夸大2019新型肺炎的危害，因为根据现在掌握的情况该新型病毒只有中等的传染性和较低的致病性，没必要夸大其词制造恐慌。Tweet
Dayomoses (@Dayo_Moses): 没错，不要小看明星后援会的组织能力和能动性，既有经验又有决心，在统筹分配方面有效率多了。Tweet

Remote and Management

[Workflow Guide] Accomplish Your Big Goals With Don’t Break the Chain

Don’t Break the Chain (or The Seinfeld Method) is a productivity strategy coined after comedian Jerry Seinfeld. Curiously, he’s claimed to have no part in its inception. The productivity method commits you to completing a daily goal for an extended period of time.
The Ultimate Guide to Remote Work | Zapier
How to collaborate across time zones

My team is spread across four states and three time zones. People often ask me how we find good times to meet. My answer: it’s not easy, but it’s also rarely necessary. Working remotely, especially when your team is distributed across the globe, means working asynchronously. And it’s a skill.
9 Lessons That Made Me a Better Remote Worker
How to Create A Remote Work Routine That Works
- “Changing locations once in a while can jumpstart creativity and productivity!”
Remote Projects 101: The Remote Guide to Project Management | Twist

Programming

A New Network Stack For Zcash
- ZcashFoundation/zebra
  
  Zcash rewrote using Rust
Tide Channels

Websockets in Tide
Packaging a Rust project for Debian
Building a Functional Core in Elixir

That’s right, I’m that guy that reads a book multiple times. The first time I go through because I’m excited and inspired about some topic, and I don’t want to lose the momentum by putting the book down — without regard for the author’s advice to do just that.
Technical Debt Is like a Tetris Game - Fluent C++
Goodbye, Clean Code

It was a late evening. My colleague has just checked in the code that they’ve been writing all week. We were working on a graphics editor canvas, and they implemented the ability to resize shapes like rectangles and ovals by dragging small handles at their edges.
Shedding Some Light on Dark

Trace-Driven Development
The Throw Keyword was a Mistake

Exception Handling Decades ago when a program crashed you would see a dire error message This meant that something horrible had happened. Usually the problem was the software tried to read or write some memory outside its address space.
NP-completeness - Wikiwand
- “A problem is said to be NP-hard if everything in NP can be transformed in polynomial time into it, and a problem is NP-complete if it is both in NP and NP-hard.”
NP (complexity) - Wikiwand
- “NP is the set of decision problems for which the problem instances, where the answer is “yes”, have proofs verifiable in polynomial time.”
  
  There exists a verifier which can checks a solution is correct in polynomial time.
- “the complexity class co-NP for which the answer “no” can be verified in polynomial time.”
  
  Verifier which checks the answer is wrong in polynomial time

Books

Bookmarks

What I Touched This Week 2020-01-26

me@iany.me (Ian Yang) — Sun, 26 Jan 2020 00:00:00 +0000

ZKP

How Zero Knowledge Proofs Are Changing Blockchain (in non-technical terms)

Cryptography

Programming

Introduction - Roguelike Tutorial - In Rust Learn by doing tutorial about developing a roguelike game with Rust.
Copying data is wasteful, mutating data is dangerous
30 Python Best Practices, Tips, And Tricks - Towards Data Science
- “Since version 3.7, Python offers data classes. There are several advantages over regular classes or other alternatives like returning multiple values or dictionaries”
- “In place variable swapping”
```
a, b = b, a
```
- “Merging dictionaries (Python 3.5+)”
```
merged = { **dict1, **dict2 }
```
- “You can use the slice notation from above to reverse a string or list. By using a negative stepping value of -1”
```
"abcdefg"[::-1]
```
Let The Compiler Do The Work - Cliffle Let Rust compiler vectorize the computation.

Read Books

An Introduction to the Efficient Market Hypothesis for Bitcoiners As we approach the Bitcoin halving due in May 2020, a heated debate has raged among Bitcoiners about whether the issuance change is being anticipated by the market or not. Those who downplay the purported impact of the issuance change tend to make references to market efficiency.
自动分类 + 键盘启动，LaunchCuts 让快捷指令更高效 - 少数派
Crypto Commons - Noteworthy - The Journal Blog
The 3 Myths of Observability - The New Stack
Outcome Over Output: Also Impact and Effort Kent Beck Jan 8 - 5 min read Outcome Matters Most Gusto is reflecting on how we observe our own activity and results. We have been wildly, improbably successful…
Once upon a time: The possible story of viruses | Student Voices | Learn Science at Scitable
The most common New Year’s resolutions for 2020—and how to achieve them I’m great at making New Year’s resolutions. I’m also great at forgetting about them. This is probably because of my total lack of discipline, which…I’m working…
- “The resolution is the work you’re promising to do, not the outcome you’re trying to hit.”
Ironies of automation Ironies of automation , Bainbridge, Automatica, Vol. 19, No. 6, 1983 With thanks to Thomas Depierre for the paper recommendation. Making predictions is a…
Ten challenges for making automation a ’team player’ in joint human-agent activity Ten challenges for making automation a ’team player’ in joint human-agent activity , Klein et al., IEEE Computer Nov/Dec 2004 With thanks to Thomas Depierre for…

Remote Work

Remote Work Archives - Open
State of Remote Work 2019 | Buffer
Achieve High Productivity in Your Remote Team Remote workers boast about being more productive than traditional office workers. Instead of wasting time at the water cooler and trying to look busy a remote worker actually gets stuff done. This is because remote teams have always been result-oriented and not otherwise.
- “long and short time goals should be well communicated to all the employees to keep their interests aligned”
- “Weekly or biweekly conference calls are a must”
Creating remote watercooler moments Are remote teams doomed to failure? Is it possible to build a positive team culture when everyone is distributed? One of the most common arguments against remote working is that remote teams miss opportunities to have ‘watercooler moments’.
- “Kudos. This section of the meeting is our time to thank or celebrate teammates who’ve been helpful or particularly awesome.”
- “Each Friday afternoon, we have Show and Tell time scheduled.”
How Many Hours in a Week Should You Work? - Toggl Blog How many hours in a week should you work? As it turns out, the answer has less to do with your schedule and more to do with your time management skills. Jonah works the same schedule almost every single week. He clocks in at around 8:30 a.m.
The Ultimate Guide to Remote Work | Zapier
Leading Distributed: The Remote Guide to Management | Twist
- “When you’re managing a team it’s your job to take your company’s wider goals and translate them into more specific goals for your team.”
- “Let them know you trust their judgement.”
- “Point them to data points to help form a decision.”
- “Critical feedback needs to be delivered in a timely manner – do not wait for a monthly 1:1.”
- “Creating a Management User Guide”
- “Default to overcommunication.”
- “How to ask for your opinion on something specific: “If you want my feedback about ongoing work, please provide me with context beforehand. Avoid mentioning me in the middle of a conversation with “@Leah thoughts?”. I can’t effectively provide you with feedback this way!””
Designing Without Whiteboards: The Remote Guide to Product Design | Twist
- “less is said about companies doing their homework on candidates.”
Scaling Your Remote Team: The Remote Guide to Hiring | Twist

Bookmarks

cube2222/jql Easy JSON Query Processor with a Lispy syntax in Go
FiloSottile/age A simple, modern and secure encryption tool with small explicit keys, no config options, and UNIX-style composability.
知乎书架知乎盐选电脑上的入口可藏的真够深的
Kindle Unlimited Magazines
Kindle Unlimited Book Lists | Goodreads
如何使用蓝思（Lexile）阅读体系合理规划孩子的原版书阅读 - 知乎
- “读者自己的蓝思阅读分数向上50分，向下100分的范围内，是比较合适的选书范围。”
Tarsnap - Online backups for the truly paranoid
Wizard Zines 中文版 via Julia Evans

What I Touched This Week 2020-01-19

me@iany.me (Ian Yang) — Sun, 19 Jan 2020 00:00:00 +0000

Writings

Javascript for Automation ➤ Clipboard Parser

Access rich information about the clipboard

Courses

Game Theory on Coursera

I have finished the first week and read the material

Read Books

改变未来的九大算法

里面的算法基本都已经知道个大概了，翻一翻回顾一下

Readings

It’s More Important To Make New Year’s Resolutions Than To Keep Them
用 Home Inventory 和 MoneyWiz 2 打造年度个人财务报告 - 少数派
Learning hardware programming as a software engineer
让爸妈也赞不绝口的 17 件居家神器，你可以带它们回家 - 少数派

Considering:
- Cif 多功能清洁乳
- 断点式卷状无纺布抹布
- 果蔬清洗盐
- 水槽一次性网兜
- 狮王洁厕剂 & 花王洁厕喷雾
- 饭菜保温板
My C code works with -O3 but not with -O0 – Nat!’s Journal
writing c library in rust « the evolving ultrasaurus
Google AI Blog: Google Research: Looking Back at 2019, and Forward to 2020 and Beyond
How Trying New Hobbies Made Me More Productive at Work - Toggl Blog
大一统效率利器 Notion，我的使用技巧 | 年度征文
4 Small Changes That Made My Work Days Better - Toggl Blog
A Response to Hello World | doxsey.net Opinions about comparing performance of Hello World programs in different languages.
世界在下沉，Crypto 在狂欢 | 预言家周报#56
Have more productive meetings with these workflows
5 Tips for More Helpful Code Reviews

Ideas

偶尔听播客，发现可以把订阅都丢到 Inoreader 用 Magic 排序来挑着听。而且 Web 版 Inoreader 还有简单的后台播放和播放列表管理。同理，订阅的 Youtube 又可以丢到 Inoreader 里。Image
After purchasing some Kindle dictionaries such as COBUILD Advanced Learner’s Dictionary, Kindle for iOS turns into a good Dictionary App for me.

Bookmarks

DoctorWkt/acwj A Compiler Writing Journey
Groxio A new programming language every two months
Digital Comics - Comics by comiXology
Doocer A tool to generate EPUB and MOBI from websites.
Find A Book | Lexile & Quantile Hub Find English book by Lexile Measure.
Accelerated Reader Bookfinder US - Quick Search Find English book by AR score.
Kindle商店 - Lexile 英文分级亚马逊原版书 Lexile 分级
vimwiki/vimwiki Maintain a wiki using Vim.
T1 | t1lang.github.io A programming language may be suitable used in embedded environment.
Generative Placeholders

What I Touched This Week 2019-12-22

me@iany.me (Ian Yang) — Sun, 22 Dec 2019 00:00:00 +0000

Problems I Solved

I tried to setup GPG in a Linux server and met problems when performing commands that require passphrase. It turns out that I have to set the GPG_TTY to tell gpg-agent that it should ask password from current console.

First kill the gpg-agent. Because it may already hang in the background to wait for a password.

pkill -9 gpg-agent

Then set the environment variable for the current session

export GPG_TTY=$(tty)

Or save it for future sessions

echo 'export GPG_TTY=$(tty)' >> ~/.profile

Read Articles

Mastery: The Complete Guide to Achieving Greatness
- “Mastery is not a function of genius or talent. It is a function of time and intense focus applied to a particular field of knowledge.”
- Play Big and Embrace Failure
- Find Balance
Blocking inside async code | stjepang.github.io
- As said by @hayeah, “the upside is, you get the worst of both worlds”.
- The crate async-std tries to solve this problem
Generalized Autoref-Based Specialization · Lukasʼ Blog

[which] makes it possible to use specialization-like behavior on stable Rust
Announcing Mio 0.7-alpha.1 · Tokio

Major changes:
- Wrapping native OS types.
- Moving to edge triggers.
醋醋 | 杨振宁的最后一战
- 超弦无法证伪
- 超弦很难取得突破
- 超弦难以落地
不值得投入大量资金建设对撞机
为什么中本聪生于1975年4月5日？
- 1933年4月5日: 美国总统签署法案宣布民众持有黄金违法
- 1975年: 美国总统签署了《黄金合法化》法案

Read Books

读书：「跑步时该如何呼吸」

韵律呼吸会以奇数模式协调足部落地同吸气和呼气之间的时机。

采用 3:2 模式，吸-2-3-呼-2。强度加大使用 2:1 模式，吸-2-呼。

Bookmarks

Happy Hues - Curated colors in context.

What I Touched This Week 2019-09-08

me@iany.me (Ian Yang) — Sun, 08 Sep 2019 00:00:00 +0000

Productivity

Remote Work

Life

Bookmarks

Dadroit JSON Viewer

Good at opening big JSON data.
starship/starship: ☄🌌️ The cross-shell prompt for astronauts.

Rich shell prompt written in Rust.
slotmap - Rust

Key allocator similar to slab.
资源集 – 书格（公测）

What I Touched This Week 2019-08-18

me@iany.me (Ian Yang) — Sun, 18 Aug 2019 00:00:00 +0000

It’s the settlement assurances, stupid - Nic Carter - Medium

Further readings
- Understanding (and Mitigating) Re-Orgs - Anthony Lusardi - Medium
- A Lower Bound on Miner Rewards
Alert Fast – Software the Hard way
Get Everything Done & Still Have Time to Play, Productivity Method

I have adopt some methods from this post into my own process.

Papers

Howard, H. (2019). Distributed consensus revised.

Misc

What I Touched This Week 2019-08-11

me@iany.me (Ian Yang) — Sun, 11 Aug 2019 00:00:00 +0000

Etsy’s experiment with immutable documentation - Code as Craft
- Send each tip as an immutable chat message
- Retrieve tips in time reverse order
Remote Work While Traveling Abroad: Candid Advice From People Who’ve Done It
Rethinking Netflix’s Edge Load Balancing - Netflix TechBlog - Medium

Let servers report their own load, the load balancers collect the information from HTTP headers.
The Scope of Unsafe

If the unsafe block has a convention with some code, that code is in the scope of the unsafe.
云风的 BLOG: 程序员应该怎样提高自己

Productivity

Misc

Bookmarks

What I Touched This Week 2019-07-07

me@iany.me (Ian Yang) — Sun, 07 Jul 2019 00:00:00 +0000

Atomics

establishing a “happens before relationship” between parts of the program and the threads that are running them.
- SeqCst: all accesses on one thread that happen before and after a SeqCst access stay before and after it.
- Acquire: an acquire access ensures that every access after it stays after it.
- Release: a release access ensures that every access before it stays before it.
Julio Biason .Net 4.0 - Things I Learnt The Hard Way (in 30 Years of Software Development)

Solve the problem you have right now. Then solve the next one. And the next one. At one point, you’ll realize there is a pattern emerging from those solutions and then you’ll find your “solve everything”.

Understand and stay way of cargo cult “Cargo cult” is the idea that, if someone else did, so can we. Most of the time, cargo cult is simply an “easy way out” of a problem.

Keep a record of “stupid errors that took me more than 1 hour to solve”

“I’m not saying it’s wrong, I’m just confused”.
Understanding Rust Lifetimes – NEAR Protocol – Medium

lifetimes is that they are all about references

Avoiding instruction cache misses – Paweł Dziepak
Programmer Test Principles – Kent Beck – Medium
Reflecting architecture and domain in code – @herbertograca
Get your work recognized: write a brag document - Julia Evans

Keep a note what you have accomplished.

What I Touched This Week 2019-06-30

me@iany.me (Ian Yang) — Sun, 30 Jun 2019 00:00:00 +0000

Amazon Is Watching – OneZero

Threat of Amazon on surveillance.
Delight Comes Last

Focus on the usabbility and features first.
Fuzzers & Reducers as Productivity Tools

Fuzz test.
A Decade of Remote Work | Viktor’s ramblings

Suggestions for remote worker.
How Exceptionally Productive People End The Workday

Weekly Review.
How to Be Great? Just Be Good, Repeatably
The Go scheduler - Morsing’s blog
The success of Go heralds that of Rust – George Hosu – Medium
“ 字要大，logo要大！” 这一世界性的难题终于被解决了

翻译需求
Libra，一场赛博朋克噩梦！
如何超过大多数人 | | 酷壳 - CoolShell
【Rocksdb实现及优化分析】 JoinBatchGroup ·

Misc

Bookmarks

What I Touched This Week 2019-06-16

me@iany.me (Ian Yang) — Sun, 16 Jun 2019 00:00:00 +0000

macOS » Uninstall GoogleSoftwareUpdate

sudo /Library/Google/GoogleSoftwareUpdate/GoogleSoftwareUpdate.bundle/Contents/Resources/GoogleSoftwareUpdateAgent.app/Contents/Resources/ksinstall --nuke

Bookmarks

What I Touched This Week 2019-06-09

me@iany.me (Ian Yang) — Sun, 09 Jun 2019 00:00:00 +0000

tokio/azure-pipelines.yml at master · tokio-rs/tokio

A template to setup Rust project in Azure Pipelines
Windows Image Installers

Scripts may be useful later to setup Windows environment.
A Year’s Worth – Kent Beck – Medium

Interesting way to plan a year’s work.
这款“盲人视角”的游戏，让我体验了世界上最漫长令人绝望的30分钟-PingWest 品玩

Bookmarks

GIF Brewery by Gfycat

What I Touched This Week 2019-05-26

me@iany.me (Ian Yang) — Sun, 26 May 2019 00:00:00 +0000

Rust

Tools

Bookmarks

What I Touched This Week 2019-03-31

me@iany.me (Ian Yang) — Sun, 31 Mar 2019 00:00:00 +0000

Read Papers

Gifford, D. K. (1979). Weighted voting for replicated data, 150–162. https://dl.acm.org/doi/10.1145/800215.806583

Bookmarks

What I Touched This Week 2019-03-10

me@iany.me (Ian Yang) — Sun, 10 Mar 2019 00:00:00 +0000

Add MIPS64 cross-compilation target to Travis by Enet4 · Pull Request #110 · BurntSushi/byteorder

An example of how to test Rust in big-endian targets.
Full-stack developers are in fact stuck at mid-level. Spare yourself from suffering – don’t go down that path / Habr

Delving into one area is also very important.
std::pin - Rust

A new stabilized module.
Subtyping and Variance - Rust

Productivity

Misc

2018 游戏与我 —— 在游戏中获得心智成长 | 2018 年度征文 - 少数派

Bookmarks

Feem v4. Share Files Offline.

A cross platforms file sharing apps via LAN.
Kurzgesagt – In a Nutshell - YouTube
codercom/code-server: Run VS Code on a remote server.
Free Planners & Productivity Worksheets | Productive Flourishing

Free templates for planning.
装了啥 | 看片、杀毒、效率办公……这 34 款 Windows 应用，每一款都是神器 - 少数派

Windows apps recommendations.

What I Touched This Week 2019-03-02

me@iany.me (Ian Yang) — Sat, 02 Mar 2019 00:00:00 +0000

My new post: ♯ Rust Cell And Refcell

Rust

Use Lock Hierarchies to Avoid Deadlock
Rust: A unique perspective

A perspective to explain wrap objects.

Programming

Java in Flames – Netflix TechBlog – Medium

Java performance benchmark
golang philosophy « the evolving ultrasaurus

Experience about how to study a new programming language.
The Rise of “No Code” – Ryan Hoover – Medium
7 Reasons Why Your Staging Environment Sucks – Loadmill

Productivity

Business

How To Be Successful

Suggestions for founders to be successful.
电子烟，一点都不性感-PingWest 品玩

Misc

Bookmarks

Immersive Math

Interactive linear algebra course.
Find out if you’ve been part of a data breach

Security tool to monitor password leaks.
OpenKeychain Security tool for Android
Cleave.js - Format input text content when you are typing
These Waifus Do Not Exist
This Person Does Not Exist

What I Touched This Week 2019-02-23

me@iany.me (Ian Yang) — Sat, 23 Feb 2019 00:00:00 +0000

Rust: Custom Exit Status Codes with ? in main

Bookmarks

itertools 0.8.0 - Docs.rs Rust iterator tools collection.
trimstray/nginx-quick-reference: This notes describes how to improve Nginx performance, security and other important things; @ssllabs A+ 100%.
Principled GraphQL
Quicker软件

Windows 启动器效率软件
告别 Windows 终端的难看难用，从改造 PowerShell 的外观开始 - 少数派

What I Touched This Week 2019-02-05

me@iany.me (Ian Yang) — Tue, 05 Feb 2019 00:00:00 +0000

Blockchain

区块链还有多长的路要走

激励机制从来就是双刃剑，有人被激励，就一定有人要付出一定的代价，而这个代价将给应用的扩张带来极大的摩擦。
“Fake Stake” attacks on chain-based Proof-of-Stake cryptocurrencies

Proof-of-Work also plays a second, somewhat less appreciated role, which is guarding access to a node’s limited resources, such as disk, bandwidth, memory, and CPU.
Monoxide原理详解: 突破区块链不可能三角的极简架构
Dapp Survey Results 2019 – Fluence – Medium

their biggest current pain points were “limited number of users” (67%) and “poor user experience” (44%).

Bookmarks

What I Touched This Week 2019-01-29

me@iany.me (Ian Yang) — Tue, 29 Jan 2019 00:00:00 +0000

A Minimalist Lifestyle – Member Feature Stories – Medium
人工智障 2 : 你看到的AI与智能无关
区块链上的随机性（一）概述与构造

区块链随机数生成
序言：「无为」与刻意、大脑的双系统、自由主义的危机与开篇絮语 - 得意忘形播客

关于认知的一个很好的播客

What I Touched This Week 2019-01-22

me@iany.me (Ian Yang) — Tue, 22 Jan 2019 00:00:00 +0000

Bookmarks

Bulma: Free, open source, & modern CSS framework based on Flexbox
GatsbyJS: Static site generator using React.
Netlify: All-in-one platform for automating modern web projects.

What I Touched This Week 2019-01-13

me@iany.me (Ian Yang) — Sun, 13 Jan 2019 00:00:00 +0000

My first post in 2019

♯ My Reading Workflow And IFTTT Applets

Readings

Bookmarks

LINER | The Highlighted Internet

A tool to annotate web page.
RoutineHub • A community for Siri Shortcuts

What I Touched This Week 2019-01-06

me@iany.me (Ian Yang) — Sun, 06 Jan 2019 00:00:00 +0000

硅谷产品大佬们写的书《Ship it》到底在讲什么？ - 少数派

关于产品的短篇集

Bookmarks

smee.io | Webhook payload delivery service

A tunnel service that eases web hook debugging.
LINER | The Highlighted Internet
RoutineHub • A community for Siri Shortcuts

What I Touched This Week 2018-12-31

me@iany.me (Ian Yang) — Mon, 31 Dec 2018 00:00:00 +0000

Handling intent for Grandma World

It talks about a compony ignoreed errors when users try to delete their data in batch.
Potholes to avoid when migrating to IPv6

Bookmarks

What I Touched This Week 2018-12-23

me@iany.me (Ian Yang) — Sun, 23 Dec 2018 00:00:00 +0000

The State of Hashing Algorithms — The Why, The How, and The Future

Calculating BLAKE2b is actually 3 times faster than KECCAK on a modern CPU.
rust - Locating resources for testing with cargo - Stack Overflow

CARGO_MANIFEST_DIR
sed in-place flag that works both on Mac (BSD) and Linux - Stack Overflow

sed -i.bak
“阿波罗”登月中的工程管理一瞥

需要对项目管理做下反思，感觉确实是披着敏捷的皮，实际上是佛系管理，做到哪算哪儿。
霍金重磅遗作！比超级人类更可怕的，是宇宙的结局… | 远读重洋

这宇宙空无一物，除非有我爱之人和爱我之人环绕其中。没有她们，我将不能承受此生之壮丽。

未来是否繁花似锦，源自我们当下之努力。

What I Touched This Week 2018-12-16

me@iany.me (Ian Yang) — Sun, 16 Dec 2018 00:00:00 +0000

7 Things You Need To Stop Doing To Be More Productive, Backed By Science
- Next time you need to avoid saying yes, use “I don’t” in your refusal, to reinforce the helpful behavior of saying no to things that aren’t worth it.
- For activities you shouldn’t be engaging in, or negative habits you want to break, add an element of difficulty, adding on a 20-second roadblock,
- a certain amount of solitude can make a person more capable of empathy towards others.
Alternatives to Blockchain – Jimmy Song – Medium

Alternatives that are cheaper and more proper than blockchain.
Behind MimbleWimble – Jordan Clifford – Medium

Introduce MimbleWimble and compare the two different implementations, Grin vs Beam.

Bookmarks

Vimways ~ 2018 That’s twenty-four articles written by knowledgeable users

What I Touched This Week 2018-12-09

me@iany.me (Ian Yang) — Sun, 09 Dec 2018 00:00:00 +0000

On-Chain versus Off-Chain Computation, Turing Completeness and Zero Knowledge Proofs

Off-Chain computation, On-Chain verification.
Blockchain Interoperability: Cosmos vs. Polkadot – Dave Kajpust – Medium

Consensus: Cosmos uses DPoS, Polkadot uses hybrid PBFT / Aurand.

Network security:
- With Polkadot the network security is pooled and shared. This means that individual chains can leverage collective security without having to start from scratch to gain traction and trust.
- Cosmos uses governance to decide whether or not the main Cosmos Hub should connect to a Cosmos Zone.
9 most useful piece of advice I’ve received

My fav:
- There are 2 types of decisions: 1-way door decisions and 2-way door decisions. Be involved with the former, but less and less in the latter.
- Before you make an offer to someone, think about whether you’d like to have 10 times as many people like them in your company.
- It’s better to have a hole in your org. than an asshole.
Go Fast and Break Things: The Difference Between Reversible and Irreversible Decisions

It is the same with the first advice I listed above.
26 medium to hard Rust questions with complete explanations

The True Cost of Rewrites | 8th Light

True cost = estimation *
( 1 + catch up + undiscovered + enhancement )

Six Years With a Distraction-Free iPhone

The author deleted all distracting apps, which is too aggressive. My solution is to disable the notifications, and put all the apps in one folder, so it is too inconvenient to open them.
Getting Your Point Across: Tech Team and Non-Tech Team Communication Tips

Be honest and transparent.
“Writing is Thinking”—an annotated twitter thread

My thoughts:
- Write it down before any argue.
- Writing helps to think throughly.
Tips for High Availability – Netflix Technology Blog – Medium
Looking at ownership in the EVM – Kelvin Fichter – Medium

ETH is the only thing that Ethereum really recognizes as an asset that can be owned. Everything else is relegated to the land of “virtual” ownership
Myths Programmers Believe about CPU Caches – Software the Hard way
The Story of OP_CHECKDATASIG

Bookmarks

We all love Terminals. - Terminals Are Sexy
我的 OneNote 入门心得
Exercism Code practice and mentorship for everyone
Tabulator The easy to use, fully featured, interactive table JavaScript library

What I Touched This Week 2018-12-02

me@iany.me (Ian Yang) — Sun, 02 Dec 2018 00:00:00 +0000

Routing and extraction in Tide: a first sketch | Rust Network Services Working Group
- tide/endpoint.rs is a trick to allow multiple impl for T
An Introduction to CKB VM – Nervos Network – Medium

Read Papers

♯ Weekly Paper Liberal Radicalism
Notes on 「Blockchain Governance: Programming Our Future – Fred Ehrsam」
- Why governance is important?
  - Change are most important in long term.
  - We have the opportunity to create vastly different power structures and program the future we want for ourselves.
- Two Critical Components of Governance
  1. Incentives
  2. Mechanisms for coordination
- Author’s options
  - [To revert The DAO attack] requires higher friction through off-chain coordination and hard forking instead of on-chain coordination with no forking.
- My thoughts
  - New developers have little incentive to work on Bitcoin.
    - Public goods crowdfunding, such as crowdfunding by inflation.
  - Buying vs locking in Quadratic Voting.
    - How about voting by coindays?

Bookmarks

What I Touched This Week 2018-11-25

me@iany.me (Ian Yang) — Sun, 25 Nov 2018 00:00:00 +0000

Rewriting History: A Brief Introduction to Long Range Attacks
Letting neural networks be weird • When algorithms surprise us

I see an oppotunity to use AI in testing.
Goodbye, Object Oriented Programming – Charles Scalfani – Medium

The problem with object-oriented languages is they’ve got all this implicit environment that they carry around with them. You wanted a banana but what you got was a gorilla holding the banana and the entire jungle.

– Joe Armstrong

Read Papers

♯ Weekly Paper Hayek The Use Of Knowledge In Society

Bookmarks

Programming Servo: A background-hang-monitor.

Rust background thread monitor.
Eva Icons - beautifully crafted Open Source UI icons for common actions and items.
Dreamacro/clash: A rule-based tunnel on Go.

What I Touched This Week 2018-11-18

me@iany.me (Ian Yang) — Sun, 18 Nov 2018 00:00:00 +0000

Bookmarks

prettytable-rs/README.md at master · phsym/prettytable-rs

Pretty print table in Rust.
nvzqz/static-assertions-rs: Rust compile-time assertions to ensure that invariants are met and your API remains stable
Squoosh

Online image compression app.
edwardtufte/tufte-css: Style your webpage like Edward Tufte’s handouts.
智能复读机音频、视频资源网

英语学习资源

What I Touched This Week 2018-11-11

me@iany.me (Ian Yang) — Sun, 11 Nov 2018 00:00:00 +0000

Papers

♯ Weekly Paper Helix

Other

新增自动化支持，让这款防休眠工具更懂你的 Mac 使用习惯：Amphetamine - 少数派

Bookmarks

kamranahmedse/pennywise: Cross-platform application to open any website or media in a floating window

What I Touched This Week 2018-11-04

me@iany.me (Ian Yang) — Sun, 04 Nov 2018 00:00:00 +0000

♯ Flatbuffers Compatible Table
2018 国内Rust社区调查报告 - 知乎
My release checklist for Rust programs - DEV Community
Is Rust functional?

Rust is not functional, but Rust does adhere to many of the tenets of functional programming. Thus in many cases, you can easily, naturally, and idiomatically write Rust in a functional style.
Parsing logs 230x faster with Rust

Crates used: nom, regex, rayon

Papers

Tezos: A Self-Amending Crypto-Ledger Position Paper

Bookmarks

Upcase, the learning platform from thoughtbot

What I Touched This Week 2018-10-28

me@iany.me (Ian Yang) — Sun, 28 Oct 2018 00:00:00 +0000

Readings

Bookmarks

中国宇航出版社

该出版社音频资源在线播放和下载

What I Touched This Week 2018-10-21

me@iany.me (Ian Yang) — Sun, 21 Oct 2018 00:00:00 +0000

Tools

Bookmarks

mozilla/rr: Record and Replay Framework

Debug tool which can rewind.
dalek cryptography

A cryptography library with Rust support.
Miscreant

A cryptography library with Rust support.
Class Central • #1 Search Engine for Free Online Courses & MOOCs
owning_ref - Rust

Reference self owned field.
Fold N Fly ✈

Different ways to fold an airplane.

What I Touched This Week 2018-10-07

me@iany.me (Ian Yang) — Sun, 07 Oct 2018 00:00:00 +0000

Code Must Be Clean. And Clear.

The kitchen is clean when there is no dirt in the oven. But if its electric panel speaks French, I can’t use the kitchen. Even if it’s perfectly clean. It’s not clear how to use it—that’s why it’s useless.
Resistant protocols: How decentralization evolves – John Backus – Medium

Introduce the history of how file sharing protocols evolved.
随谈：软件架构师与数学的关系

软件架构师最重要的一项能力是解决问题，数学同时提供了思路和技巧。
有目标地收集信息，打造个人灵感库 |《灵感从何而来》读书笔记 - 少数派

有目标的收集竞品和相似产品，挖掘原因和模式

Bookmarks

deanishe/awgo: Go library for Alfred 3 workflows

What I Touched This Week 2018-09-29

me@iany.me (Ian Yang) — Sat, 29 Sep 2018 00:00:00 +0000

Software disenchantment

We developers should have done better in performance.
How to Use Only a Dark Menu Bar and Dock in macOS Mojave - TekRevue

Bookmarks

A Rust FFI adventure in unsafety | Travis Finkenauer
autosub

Auto segment audio into sentences, and generate subtitles
rv8 | RISC-V simulator for x86-64

Reference of RISC-V JIT implementation.
ColorBox by Lyft Design

What I Touched This Week 2018-09-23

me@iany.me (Ian Yang) — Sun, 23 Sep 2018 00:00:00 +0000

An empirical analysis of anonymity in Zcash | the morning paper
Code Review from the Command Line - Bits, Bytes, and Words

Code Review using Vim
How we organize a complex Rust codebase
Adventures in Rust: Futures and Tokio · Bryan Gilbert’s Blog

Future is essentially a state machine that does nothing until it’s actively polled. Additionally as futures are composed using combinators such as map and join, we are actually building a more elaborate state machine, not manipulating the result of something that is already running somewhere.

Identity and Reputation in Web 3
On Linus Torvalds, technical & corporate communications • ds9a.nl articles
GitHub的中国乱象：刷星、高仿、骂街和版聊-PingWest 品玩
如何点亮你的人生技能树：《斜杠青年》读书笔记 - 少数派

像听音乐那样读书，没有人会一个音符不漏的听歌。

What I Touched This Week 2018-09-15

me@iany.me (Ian Yang) — Sat, 15 Sep 2018 00:00:00 +0000

区块链与下水道维修艺术 - 橙皮书

类比城市下水道系统
- 成一定规模之后再考虑优化
- 分层
- 和商业活动建立联系
Repeat yourself, do more than one thing, and… — programming is terrible

Duplication is far cheaper than the wrong abstraction. — Sandi Metz

When a unit has no rules about what code cannot be included, it will eventually contain larger and larger amounts of the system. This is eternally true of every module named ‘util’, and why almost everything in a Model-View-Controller system ends up in the controller.
15 Best Ways to Achieve Flow | CoderHood

Collect all the information you need ahead of time.

I found that worries and anxieties go away for the duration of a coding session if I write them down with the clear intent of getting back to it later.
吴恩达：我的AI商业化方法论 - 量子位

现在在线内容非常丰富了，一个首席学习官（Chief Learning Officer）的工作，不是去创造内容，而是选择内容给团队学习。这样，就能低成本高效培训整个团队。

融资5000万美元，PingCAP刘奇说希望用代码改变世界 |【经纬低调新闻】
There’s always more work to do—but you still don’t need to work long hours

The answer: by planning ahead. And planning ahead the right way.

Bookmarks

Design sites:

What I Touched This Week 2018-09-09

me@iany.me (Ian Yang) — Sun, 09 Sep 2018 00:00:00 +0000

Advice for a new executive | Lara Hogan

For CTO and VP of Engineering.
韡武专栏：解决集成需求才是未来区块链业务的重点

Productivity

Bookmarks

google/tink: Tink is a multi-language, cross-platform library that provides cryptographic APIs that are secure, easy to use correctly, and hard(er) to misuse.
CLI: improved

List of cli tools with nice UI, such as
- sharkdp/bat: A cat(1) clone with wings.
Google, but for colors.

Papers to Read

2018, J. Lee, Reconciling High-level Optimizations and Low-level Code with Twin Memory Allocation

What I Touched This Week 2018-09-02

me@iany.me (Ian Yang) — Sun, 02 Sep 2018 00:00:00 +0000

区块链安全，要从设计抓起
How Rust’s standard library was vulnerable for years and nobody noticed
With Undefined Behavior, Anything is Possible | Raph Levien’s blog

About the undefined behavior in C standard.
How to find stuff in Git – Ty Walls – Medium

5 Reasons You Should Wake Up Before Everyone Else In The Morning.
We fired our top talent. Best decision we ever made.
我不怀疑你的能力，但不看好你的人品

「做一个体面的人，在任何场合下，守住底线和尊严，漂亮的解决问题，就是你格局的体现。」

Bookmarks

CodeSandwich/Mocktopus: Mocking framework for Rust
MDS | LibraryThing

Navigate the library decimal system catalogs.
OCLC Classify – an Experimental Classification Service

Search decimal category by ISBN.

What I Touched This Week 2018-08-26

me@iany.me (Ian Yang) — Sun, 26 Aug 2018 00:00:00 +0000

Blockchain

区块链和 P2P 网络

Bitcoin 和 Ethereum 网络的区别，并介绍了日蚀攻击
Why Blockchain is Hard – Jimmy Song – Medium

It is hard to upgrade.
Token Engineering Case Studies – Ocean Protocol

How to design token using objective function and optimization methodology.
简评三个基于 VRF 的共识算法 - 简书

VRF 可验证的随机算法，被广泛运用于 PoS 项目中选取出块节点
Ethereum Development Walkthrough (Part 2: Truffle, Ganache, Geth and Mist)

Programming

Elegant Library APIs in Rust - Pascal’s Scribbles
How to alleviate the pain of Rust compile times
shell - Why does sudo ignore aliases? - Unix & Linux Stack Exchange

Expand alias following command such as sudo, proxychains.
Rust lifetime elision rules
Rust Lifetime subtyping

Misc

Use CHAR(8232) to concat strings with new lines in Apple Numbers
24-core CPU and I can’t type an email (part one) | Random ASCII

How to locate a weird bug.
There Is No Right Decision

Don’t waste time on figuring out the right decision.
我不怀疑你的能力，但不看好你的人品

做一个体面的人，在任何场合下，守住底线和尊严，漂亮的解决问题，就是你格局的体现。
财务自由是个大骗局

Bookmarks

What I Touched This Week 2018-08-12

me@iany.me (Ian Yang) — Sun, 12 Aug 2018 00:00:00 +0000

I’m a very slow thinker | Derek Sivers

Take time to think before come to conclusion.
6 Self-Improvement Hacks to Instantly Improve the Way You Live and Work
1. Express more gratitude.
2. Be intentional about learning from someone.
3. Invest financially in others.
4. Forget time management — be a good manager of “self.”
5. Practice forgiveness.
6. Replace your “to do” list with a “to be” list.

How to create a schedule that will actually help you.
- Split time into blocks
- Schedule all the blocks
- Uncontrollable events first
Extreme Makeover: Code Edition - DEV Community
7 Tips for Writing Clearner Code:
1. Use descriptive naming
2. Functions should do one thing well
3. Comments should tell the “why”
4. Follow Sandi Metz’s rules
5. Consistency is key
6. DRY up your code — but not too much
7. Encapsulate and modularize your code
Accidentally Turing-Complete

It takes a very focused effort to constrain a system so that it is not Turing Complete. – Mastering Ethereum
如何实践比尔·盖茨的读书方法，这是我的经验之谈 - 少数派

Bookmarks

faressoft/terminalizer: 🦄 Record your terminal and generate animated gif images

What I Touched This Week 2018-07-28

me@iany.me (Ian Yang) — Sat, 28 Jul 2018 00:00:00 +0000

Misc

How to use sudo with Touch ID on your Mac | iMore

Bookmarks

What I Touched This Week 2018-07-22

me@iany.me (Ian Yang) — Sun, 22 Jul 2018 00:00:00 +0000

Blockchain

Posts

♯ Decred Review

Misc

What I Touched This Week 2018-07-14

me@iany.me (Ian Yang) — Sat, 14 Jul 2018 00:00:00 +0000

Timsort — the fastest sorting algorithm you’ve never heard of

Rust

Why Rust? – Parity Technologies
Programming Servo: A ‘script’ event-loop

Rust event loop pattern.

Tech

深入理解flutter的编译原理与优化 · 语雀
Which hashing algorithm is best for uniqueness and speed? - Software Engineering Stack Exchange

Detailed comparison between different hashing algorithms.

Methodology

别让自己变为一个废掉的程序猿

走出舒适区

Bookmarks

The only cheat sheet you need

Programming cheat sheet using curl as interface.
andersk/enum_primitive-rs: Macro to generate num::FromPrimitive instances for enum that works in Rust 1.0
Open Source Test Automation Framework | Gauge

What I Touched This Week 2018-07-07

me@iany.me (Ian Yang) — Sat, 07 Jul 2018 00:00:00 +0000

Nervos

Misc

Debugging data flows in reactive programs | the morning paper
李永乐老师 - YouTube

紧贴实事和热点的科普系列视频
别再用「六个点」当省略号了，这些标点都有更规范的输入方式 - 少数派

Bookmarks

FiloSottile/mkcert: A simple zero-config tool to make locally trusted development certificates with any names you’d like.
molten

New Python lightweight web framework.
shotsnapp - Create beautiful device mockup presentation
mobxjs/mobx at stackshare

Javascript state management library.

What I Touched This Week 2018-07-01

me@iany.me (Ian Yang) — Sun, 01 Jul 2018 00:00:00 +0000

Segregated Witness: A Fork Too Far

What is segwit? The pros and cons.

Reading Notes

Blockchain Isn’t a Revolution
- Trust-minimizing - Cryptocurrency
- Tracking - Blockchain
- Trading - Cryptoassets
Exploring Minimum-Viable Sidechains on ETC
- The sidechain is able to balance the advantages a private network with the security of the mainnet.
- If it (the sidechain) doesn’t depend data from the mainnet, then it doesn’t get any of the value of putting data on mainnet in the first place.
A Photographer’s Guide to Color Histogram – The Coffeelicious Exposure Quality: 1. There is no massive overflow of the contours near the left or right edges of the histogram. 2. There are pixels in each brightness interval. 3. A picture will have a better contrast and a more impressive visual effect if the ends are higher and the middle is lower in the histogram.

Bookmarks

Papers with Code : the latest in machine learning

What I Touched This Week 2018-06-24

me@iany.me (Ian Yang) — Sun, 24 Jun 2018 00:00:00 +0000

♯ Vim Marks Stack

Rust

Blockchain

Exploring Minimum-Viable Sidechains on ETC – ETCDEV – Medium

Tools

Tech

十问 TiDB ：关于架构设计的一些思考
Floating-Point Determinism | Random ASCII
A Trick For Test Maintenance

Track that:
- Which code is exercised by this test?
- Which test covers this bit of code?

Misc

Bookmarks

Netflix/zuul: Zuul is a gateway service that provides dynamic routing, monitoring, resiliency, security, and more.
Rules of Machine Learning: | Machine Learning Rules | Google Developers
The online IDE for web applications. Powered by Visual Studio Code. - StackBlitz
WREB-fm – Radio Garden

Internet Radio with earth visualization.
Docz

Documentation tool with integration of React.
Tenor GIF Keyboard - Bring Personality To Your Conversations
dylanaraps/pure-bash-bible: 📖 A collection of pure bash alternatives to external processes.
Titus

A container management platform
flutter/flutter: Flutter makes it easy and fast to build beautiful mobile apps.
gluon-lang/gluon: A static, type inferred and embeddable language written in Rust.

What I Touched This Week 2018-05-27

me@iany.me (Ian Yang) — Sun, 27 May 2018 00:00:00 +0000

Convert git diff output to the format can be recognized by vim quickfix.
Browser auto reload using osascript and watchexec
- Save following snippet as executable bash script reload-chrome. It reload the active tab of Google Chrome.
```
 osascript -l JavaScript -e 'Application("Google Chrome").windows[0].activeTab.reload()'
```
- Run the script above when files are changed
```
 watchexec -w app -w config -p reload-chrome
```
Devops Security Checklist | Sqreen

Best practices to check security before release.
Be careful what you copy: Invisibly inserting usernames into text with Zero-Width Characters

Bookmarks

Docusaurus · Easy to Maintain Open Source Documentation Websites
Flutter - Beautiful native apps in record time

Google crossplatform native mobile app development platform.
Cool Backgrounds

Cool backgrounds created by CSS
Royalty Free Music | Filmstro
BurntSushi/chan: Multi-producer, multi-consumer concurrent channel for Rust.
djc/askama: Type-safe, compiled Jinja-like templates for Rust
ambv/black: The uncompromising Python code formatter
Wired Elements

Hand-drawn UI elements, which can be used in mockup created using code.
improbable-eng/thanos at stackshare

Prometheus monitoring integration for Golang.

What I Touched This Week 2018-05-20

me@iany.me (Ian Yang) — Sun, 20 May 2018 00:00:00 +0000

Towards a Practice of Token Engineering – Ocean Protocol

From Optimization Methodology to Token Methodology
Google YOLO

Introduction to clickjacking attacks in web

Readings

Bookmarks

danistefanovic/build-your-own-x: 🤓 Build your own (insert technology here)

Learn by doing tutorials.
Devops Security Checklist | Sqreen
Visual Studio Live Share | Visual Studio

Pair programming tool.
RSSHub

Create RSS for some web apps. It is open source and can be self hosted.
RelaxedJS/ReLaXed: Create PDF documents using web technologies
Free Royalty Free Music — Fugue

Free music for videos.

What I Touched This Week 2018-05-12

me@iany.me (Ian Yang) — Sat, 12 May 2018 00:00:00 +0000

Rust in production at Figma – Figma Design

Only use Rust in proper components.
根域名的知识 - 阮一峰的网络日志
One Decision Separates The Wealthy From The Non-Wealthy
区块链上无民主

Tools

抓取网页可以用 Safari Reading Mode 然后 Email。电脑上直接快捷键 cmd+shift+i

巧用 Word 排版技巧，制作一本的符合自己阅读习惯 Kindle 电子书 - 少数派

News

Misc

腾讯没有梦想

分析腾讯为什么失去了创新能力，变成了一家投资公司
Why founders need hobbies - Baremetrics

What I Touched This Week 2018-05-06

me@iany.me (Ian Yang) — Sun, 06 May 2018 00:00:00 +0000

Cryptographic Right Answers — » Latacora

How to do cryptographic right now.
How to lookup from and insert into a HashMap efficiently in Rust?

Use entry function.
This Exercise Will Help You To Stop Wasting Your Time

Keep activity log to know how time is spent
Google’s “Director of Engineering” Hiring Test

Analysis of Google interview questions.

Fail2ban Quick Start

Add regex in filter.d
Test regex with fail2ban-regex.
Add jail section in jail.local
If the log file is too huge, truncate it first
Restart and verify with fail2ban-client status

Tools

Netflix FlameScope

Performance report which is an improvement based on flame graphs.
给 OmniFocus 换一个好看的透视图标 - 少数派

Bookmarks

tarpc/pre-commit at master · google/tarpc

Run rustfmt in git hooks.
dgryski/awesome-consensus: Awesome list for Paxos and friends
alex-shapiro/ditto: CRDTs for common data structures like maps, vecs, sets, text, and JSON

Replicated data structure.
graphile/postgraphile: A GraphQL API created by reflection over a PostgreSQL schema.
FoundationDB | Home

Distributed database which supports ACID transactions.
https://www.npoint.io

Simple JSON storage service for demo and PoC.
BBC Sound Effects - Research & Education Space
List of all GO Interfaces

Table of the intefaces in Golang.
hendricius/the-bread-code: Learn how to master the art of baking the programmer way.
zserge/webview: Tiny cross-platform webview library for C/C++/Golang. Uses WebKit (Gtk/Cocoa) and MSHTML (Windows)

What I Touched This Week 2018-04-07

me@iany.me (Ian Yang) — Sat, 07 Apr 2018 00:00:00 +0000

Tech Readings

Python 3’s range is more powerful than Python 2’s xrange - Trey Hunner
40 Lessons From 4 Years of Remote Work – Buffer Stories
Atomics | Vorner’s random stuff

About atomics in Rust.
2 Fast 2 Furious: migrating Medium’s codebase without slowing down
Mark Zuckerberg on Facebook’s future, fake news, and Russian mischief - Vox
Making the Touch Bar finally useful :: By abandoning crappy Apple guidelines :: vas3k’s blog

Customize the uniform touch bar using BetterTouchTool
Resistance Is Futile. To Change Habits, Try Replacement Instead. - The New York Times
How to Fall Asleep in 2 Minutes or Less

What I Touched This Week 2018-03-25

me@iany.me (Ian Yang) — Sun, 25 Mar 2018 00:00:00 +0000

让一台家用打印机做一些有趣的创造：Creative Park - 少数派
Project from Hell | Project Failures

Learn from the worst project.
一个月里我跟踪了108个居民，发现一个特别好玩的事，80%的人手里都拿着一个尿壶 | 何志森一席第571位讲者

不同的角度学习了很多知识
How to Hack an Engineer

How should engineer filter the information.
The Future-Altering Technologies We Forgot to Invent

What I Touched This Week 2018-03-18

me@iany.me (Ian Yang) — Sun, 18 Mar 2018 00:00:00 +0000

类型论驿站写作计划作者分享了 Lambda 演算和 Coq 的学习笔记
Why is pi here? And why is it squared? A geometric answer to the Basel problem - YouTube
Synode: understanding and automatically preventing injection attacks on Node.js | the morning paper Sanity check on exec and eval.
Exposing congestion attack on emerging connected vehicle based traffic signal control | the morning paper Paper about the malicious nodes probroblems in autonomous driving.

HBO送我去了西部世界，而我见识了人性在褪去枷锁后的泯灭 | PingWest品玩

Bookmarks

Instant chords for any song - Chordify
tpope/vim-dadbod: dadbod.vim: Modern database interface for Vim
Hearth | Decentralized website publishing

Publish website to IPFS

What I Touched This Week 2018-03-11

me@iany.me (Ian Yang) — Sun, 11 Mar 2018 00:00:00 +0000

Tech Reading

一个数独引发的惨案：零知识证明（Zero-Knowledge Proof）

Non-Tech Reading

awesome-cn-cafe/README.md at master · ElaWorkshop/awesome-cn-cafe
2017，非主流英语自学指南 - 少数派
你所不知道的伊朗
自我实现的预期

关于通货膨胀经济科普文
如何用 Markdown 写论文？ - 少数派

Bookmarks

gsingh93/trace: A Rust syntax extension for tracing function execution
Find something Rusty to work on

Find issues to work in Rust community.

What I Touched This Week 2018-03-04

me@iany.me (Ian Yang) — Sun, 04 Mar 2018 00:00:00 +0000

Why I Quit Google to Work for Myself - Silly Bits

Why author thought the promotion procedure is broken.
pypa/pipenv: Python Development Workflow for Humans.
kbknapp/clap-rs: A full featured, fast Command Line Argument Parser for Rust
withoutboats/failure: Error management

What I Touched This Week 2018-02-25

me@iany.me (Ian Yang) — Sun, 25 Feb 2018 00:00:00 +0000

Tech Readings

The Benjamin Franklin Method of Reading Programming Books | Path-Sensitive

Read your programming book as normal. When you get to a code sample, read it over.

Then close the book.

Then try to type it up.
Who Killed The Junior Developer? – melissa mcewen – Medium

Non-Tech Readings

The two laws of building products – The Startup – Medium

If you can’t sell it, don’t build it

If you can’t build it, don’t sell it

The startup team should cover different roles
- Hacker: implement the product
- Hustler: sale person
- Designer: art and ux
- Analyst: data analysis and business inteligence
- Dreamer: motivate the team
Why I don’t use my real photo when messaging with customers on my website · Kapwing Blog
- Sexual harassment and irrespective.
- Suggestion: Use company identity in custom support.

Fix macOS blue overlay above videos on Dell display

Click the On Screen Menu button to the right of the screen and select Menu. Navigate to Display Settings (4th category down). Then navigate over to Smart Video Enhance and switch Movie to Off.

Bookmarks

Rust Fuzz

A random test tool for Rust.

What I Touched This Week 2018-02-19

me@iany.me (Ian Yang) — Mon, 19 Feb 2018 00:00:00 +0000

Tech Readings

区块链里的 “Oracle”是什么？
Fundamental challenges with public blockchains – Preethi Kasireddy

List of challenges and research directions.
We’re all crypto miners now: Hacking epidemic churns out Monero

Another post about botnet using browser.
Decentralisation in Bitcoin and Ethereum networks | the morning paper
arogozhnikov/python3_with_pleasure: A short guide on features of Python 3
Part 2: How to stop me harvesting credit card numbers and passwords from your site

Security with 3rd-party code.
How to become a code-learning super NINJA (1) – codeburst
Advice From A 19 Year Old Girl & Software Developer
Aspiring data scientist? Master these fundamentals.
Let’s talk about usernames

Best practices about usernames.

Papers Readings

Bracha, G. (1987). Asynchronous Byzantine agreement protocols. Information and Computation, 75(2), 130–143. http://doi.org/10.1016/0890-5401(87)90054-X
Al-Bassam, M., Sonnino, A., Bano, S., Hrycyszyn, D., & Danezis, G. (2017). Chainspace: A Sharded Smart Contracts Platform. Retrieved from http://arxiv.org/abs/1708.03778
Ali, M., Nelson, J., Labs, B., Shea, R., Labs, B., Freedman, M. J., … Freedman, M. J. (2016). Blockstack : A Global Naming and Storage System Secured by Blockchains. USENIX Annual Technical Conference, 181–194. Retrieved from https://www.usenix.org/conference/atc16/technical-sessions/presentation/ali

Non-Tech Readings

Bookmarks

Ivy League MOOCs | Class Central Courses from Ivy League.
vurtun/nuklear: A single-header ANSI C gui library
Palettes | Flat UI Colors 🎨 280 handpicked colors ready for COPY & PASTE

What I Touched This Week 2018-02-11

me@iany.me (Ian Yang) — Sun, 11 Feb 2018 00:00:00 +0000

The Anatomy of ERC721, Non-Fungible Tokens.

What I Touched This Week 2018-02-04

me@iany.me (Ian Yang) — Sun, 04 Feb 2018 00:00:00 +0000

Reading

Why We’re Horrible at Achieving Goals (And What to Do About It)
- we have to constantly track our actions and see if they lead us to the end result.
- until we figure out what type of actions lead to what we want in the end.
If It Doesn’t Suck, It’s Not Worth Doing
- primary obstacle to success is the idea of success.
- people feel maxed-out mentally and physically, and thus stop, when they are at only 40% of their actual capacity.
- Do something and don’t stop until it’s complete, no matter how long it takes.

Bookmarks

What I Touched This Week 2018-01-21

me@iany.me (Ian Yang) — Sun, 21 Jan 2018 00:00:00 +0000

How to read and understand a scientific paper: a guide for non-scientists – Violent metaphors
OOPs, I FP’d again! – Hacker Noon

OOP and FP in harmony
The 100x Engineer – Zef.me

100x Engineer vs 10x Programmer
Browser as Botnet, or the Coming War on Your Web Browser

Experiment to abuse client browser CPU.
Miners Aren’t Your Friends – Keep Network
OpenSSL command cheatsheet – freeCodeCamp

Read Books and Watched Courses

Interesting Projects

emilwallner/Screenshot-to-code-in-Keras: A neural network that transforms a screenshot into a static website

Bookmarks

What I Touched This Week 2018-01-14

me@iany.me (Ian Yang) — Sun, 14 Jan 2018 00:00:00 +0000

Rust

Making TRust-DNS faster than BIND9

Performance tunning DNS server implemented in Rust.
error_chain - Rust
They’re not Generics; they’re TypeParameters

Blockchain

Misc

I’m harvesting credit card numbers and passwords from your site. Here’s how.

Security essay about using third party Javascript library in login page.
tombh/texttop: A fully interactive X Linux desktop rendered in TTY and streamable over SSH
Big list of http static server one-liners

What I Touched This Week 2017-12-31

me@iany.me (Ian Yang) — Sun, 31 Dec 2017 00:00:00 +0000

Tools

Jarfix

Associate .jar files with java in Windows.
用 Mac 抹掉的 U 盘在 PC 上不能用？试试这个方法 | 一日一技 - 少数派

Games

这款新游戏，5 年前单凭一个试玩版惊艳了整个游戏界：Gorogoa - 少数派

What I Touched This Week 2017-11-26

me@iany.me (Ian Yang) — Sun, 26 Nov 2017 00:00:00 +0000

Maching Learning

The Secret to Strong AI – Numenta

Opinion: AI should be developed based on brain research.
Backpropagation In Convolutional Neural Networks - DeepGrid

Blockchain

Slasher: A Punitive Proof-of-Stake Algorithm - Ethereum Blog
- Signing Privileges/Validators is determined in early blocks.
- Signing rewards claim is deferred.
- Everyone can publish conflicting signing to claim cheater finder reward. Cheater looses rewards, reporter is incentivized by the reward.
Slasher 从机制上迫使要获利就要不同分支上使用相同 key 做冲突签名，由于签名几乎不可伪造，所以任何人发现冲突后都可以同时在不同的分支上举报。

Misc

♯ Read Various RSA Keys In Ruby
ZFS 文件恢复
个人习惯总结
GoogleCloudPlatform/container-diff: container-diff: Diff your Docker containers
Brightbox Ruby NG : “Brightbox” team

Ruby PPA to ease installing various pre-built ruby versions in Ubuntu.
date-fns/date-fns: ⏳ Modern JavaScript date utility library ⌛️
antvis/g2

Javascript chart/visulazation tool.
gitlab-ci-multi-runner/clear-docker-cache

Script to cleanup broken Gitlab CI cache stored as docker instances.
How to edit multi-gigabyte text files? Vim doesn’t work =( - Stack Overflow
```
 vim -u "NONE" hugefile.log
```
TurboNote - Chrome Extention

Take note when watching videos.
GIPHY | Search All the GIFs & Make Your Own Animated GIF

What I Touched This Week 2017-11-19

me@iany.me (Ian Yang) — Sun, 19 Nov 2017 00:00:00 +0000

Machine Learning

Blockchain

Ethereum Casper 101 – jon choi – Medium
Ganache | Truffle Suite

Quickly fire up a personal Ethereum blockchain which you can use to run tests, execute commands, and inspect state while controlling how the chain operates.

Other

What I Touched This Week 2017-11-12

me@iany.me (Ian Yang) — Sun, 12 Nov 2017 00:00:00 +0000

A tour of Postgres Index Types
- B-Tree - For most datatypes and queries
- GIN - For JSONB/hstore/arrays which allow multiple values.
- GiST - For full text search and geospatial datatypes, for rows that overlap values
- SP-GiST - For larger datasets with natural but uneven clustering
- BRIN - For really large datasets that line up sequentially
- Hash - For equality operations, and generally B-Tree still what you want here
Why We Switched from Python to Go | The Stream Blog
- pkg/errors: Simple error handling primitives
- … errcheck and megacheck are handy to avoid making these mistakes.

Solidarity — The CLI for Developer Sanity – Red Shift

Snapshot environment requirements and verify later.
Stop using .IO Domain Names for Production Traffic – Hacker Noon

.IO DNS Server outage.
k88hudson/git-flight-rules: Flight rules for git

Git FAQ

AI

Building AI That Can Build AI – The New York Times – Medium
How to calculate derivatives using backpropation, and the calculus explanation

Productivity

How to Break Through Any Learning Plateau and Never Stop Growing

As soon as you see that you’re stuck, you should figure out how you can modify your practice to deal with the weakest part of your skillset..
- Take challenge, get out of comfort zone.
- Mix up learned skills
- Find week parts and improve
How to Improve Your Life in Just a Month – Thrive Global

You can’t change what you not ready to quit.

… make small improvements every day that will gradually lead to the change you want.Each day.

Take 20 minutes each night to make your mornings easier.

Stop doing what average people do.

Also mentioned in Five Unproductive Habits I’ve QUIT So I Can Get More Done

Actions:
- Think what are worth to do.
- Plan at the night instead of morning.
- Contribute the most productive time slots to the most important things.

Life

Rules for Happier Parents: Children Change — When We Let Them

Stick to describing your child’s behavior on any one occasion as nothing more than that.

Projects

Poly

3D Model galery.

What I Touched This Week 2017-11-05

me@iany.me (Ian Yang) — Sun, 05 Nov 2017 00:00:00 +0000

learnbyexample/Command-line-text-processing: From finding text to search and replace, from sorting to beautifying text and more

A good reference to go though what these commands can do, and a library to lookup examples when using these tools.
从Pinterest到阿里，再谈工业界的推荐系统 | PingWest品玩
Stripe Atlas: Getting Your First 10 Customers

Where and how to get your first 10 custormers.
Designing GraphQL Mutations – Apollo GraphQL

Conventions/Patterns of GraphQL Mutations design.
… in graphql-go, the input object must be defined using NewInputObject and the nested types should also be input objects.
Finding Ideas for Programming Side Projects

Projects

Devhints — TL;DR for developer documentation

Find cheatsheets.
grpc / grpc.io

RPC framework.

What I Touched This Week 2017-10-29

me@iany.me (Ian Yang) — Sun, 29 Oct 2017 00:00:00 +0000

Lua C API userdata 和 light userdata
Learn Redis the hard way (in production) · trivago techblog

Performance tuning tips.
1% Gains for How to Increase Productivity: The Ultimate Guide – Intelligent Change

Several simple actions to achive 1% gains of productivities.
Error Boundaries in React 16 – Hacker Noon

Try cache in React component.
Coding with Clarity · An A List Apart Article

Principles and examples for clarity code.
Un-Hooked: Increasing Focus in the Age of Distraction - YouTube

Break the loop of Trigger, Action, Reward, Investment.

Shallow Renderer - React

Test react by rendering one level only. There’s a high lever wrapper enzyme/shallow.
datitran/jupyter2slides: Cloud Native Presentation Slides with Jupyter Notebook + Reveal.js

Template which converts Jupyter Notebook to Reveal.js slides.
Python Graphing Library, Plotly

Can be used in Jupyter Notebook.
Folium — Folium 0.2.0 documentation

Python plotting with map data.
bkaradzic/bgfx: Cross-platform, graphics API agnostic, “Bring Your Own Engine/Framework” style rendering library.

What I Touched This Week 2017-10-22

me@iany.me (Ian Yang) — Sun, 22 Oct 2017 00:00:00 +0000

Vim After 15 Years | Ian Langworth’s Things of Variable Interest

Vim tips
How does Ethereum work, anyway? – Preethi Kasireddy – Medium

Introduction to Ethereum
Use luarocks installed via Homebrew without sudo

Edit /usr/local/Cellar/lua@5.3/5.3.4/libexec/share/lua/5.3/luarocks/fs/lua.lua.

In function fs_lua.check_command_permissions(flags), Change the if condition to
```
if fs.exists(dir) and not fs.is_writable(dir) and not fs.is_writable(dir .. "/bin") then
```

Projects

fastify/fastify: Fast and low overhead web framework, for Node.js

Node.js http server using async/await.
ansible/awx: AWX Project

Opensource Ansible Tower
cloudnativelabs/kube-router: A distributed load balancer, firewall and router designed for Kubernetes
sheerun/vim-polyglot: A solid language pack for Vim.
Microsoft/napajs: Napa.js: a multi-threaded JavaScript runtime

What I Touched This Week 2017-10-14

me@iany.me (Ian Yang) — Sat, 14 Oct 2017 00:00:00 +0000

Graylog 集中日志管理 - 日志输出
Streams: a new general purpose data structure in Redis. - antirez

Redis will support stream processing.
The 5 Types Of React Application State - James K Nelson

A pattern to categorize Redux State.
Developing a Redux Edge {Book}

A book recommended if you want to learn Redux in depth.
Learned from the book above, delete a key from object:
```
const {[id]: remove, ...rest} = state;
return rest;
```

Projects

Ramda Functional library for Javascript, It is pure, immutable and auto curried.
Heron Stream processing framework via Twitter, which API is compatible with Apache Storm.

Shell, vim tips

Fix quickfix hilight color
```
hi! link QuickFixLine Search
```
Zsh 5.1 and bracketed paste

Fix ^[[?2004h when using zsh in dump terminal
```
if [[ $TERM == dumb ]]; then
unset zle_bracketed_paste
fi
```

Close disturbing windows in #vim

function! s:CloseDisturbingWin()
if &filetype == "help" || &filetype == "netrw"
let l:currentWindow = winnr()
if s:currentWindow > l:currentWindow
let s:currentWindow = s:currentWindow - 1
endif
close
endif
endfunction
command! Close :pclose | :cclose | :lclose |
\ let s:currentWindow = winnr() |
\ :windo call s:CloseDisturbingWin() |
\ exe s:currentWindow . "wincmd w"

What I Touched This Week 2017-10-08

me@iany.me (Ian Yang) — Sun, 08 Oct 2017 00:00:00 +0000

Graylog 集中日志管理 - 收集日志
Graylog 集中日志管理 - 日志处理

To make android cmd tools work with Java 9

 export JAVA_OPTS="--add-modules=java.se.ee"

Don’t let local VMs mess up known_hosts

 Host 10.211.55.* 10.37.129.*
StrictHostKeyChecking no
UserKnownHostsFile /dev/null

How I got to 200 productive hours a month

Methods to improve focus.
小记一次用 ARKit 设计和开发 Mobile AR 篮球小项目 - 少数派

AR 用户引导的设计分享
‘Silent Start’: The Brilliant (and Surprising) Meeting Method I Learned From Amazon’s Jeff Bezos | Inc.com

Spend time to read stuffs in the start of a meeting.
How to set syslog ident in Python

Projects & Tools

mattgreen/watchexec: Executes commands or restart server in response to file modifications
Ping and mtr from multiple locations
mattrajca/sudo-touchid: A fork of sudo with Touch ID support.

Use Touch ID to authorize sudo.

abseil / abseil.io

C++ library ready for future standard C++ features.
realize/README.md at master · tockins/realize

Automate Go development.
aptible/supercronic: Cron for containers
SerpentAI/SerpentAI: Game Agent Framework. Helping you create AIs / Bots to play any game you own! BETA

Framework which integrates image recognition, OCR, tensorflow and etc.
hootsuite/atlantis: A unified workflow for collaborating on Terraform through GitHub
chef/bento: Packer templates for building minimal Vagrant baseboxes

Base image for various OS, and packer scripts to build them.
Draggable JS – JavaScript drag and drop library
styled-components

CSS library for React.
GoogleChrome/puppeteer: Headless Chrome Node API
asciimoo/colly: Fast and Elegant Scraping Framework for Gophers

What I Touched This Week 2017-09-24

me@iany.me (Ian Yang) — Sun, 24 Sep 2017 00:00:00 +0000

Rails Cookie 如何解密
Jupyter Notebook: When running jupyter as daemon, remember set env variable LANG to en_US.UTF-8
Designing Websites for iPhone X

New CSS rules for iPhone X

Reading

Scaling Event Sourcing for Netflix Downloads, Episode 2
1. Fetch aggregate and submit command
2. Command handler generates events
3. Event handler applies events
4. Save events and returned new Aggregate

Projects

NGINX Unit

NGINX as application container.
spf13/viper: Go configuration with fangs
anvaka/ngraph.path: Path finding in a graph

What I Touched This Week 2017-09-17

me@iany.me (Ian Yang) — Sun, 17 Sep 2017 00:00:00 +0000

wolfcw/libfaketime: libfaketime modifies the system time for a single application

Useful for test related to time.
How to increase root maximum file open limit (ulimit) in Ubuntu? - Stack Overflow

Limit for root user must be added explicity. Wildcard ‘*’ does not match root.
Go process livereload for development

Decimal is consider as integer in MySQL, set scale explicitly.

change_column :products, :discount_percentage, :decimal, precision: 5, scale: 2

Projects

apiDoc - Inline Documentation for RESTful web APIs

Generate API Doc from comments.
NATS Documentation

Message Queue using Golang.
Wilson’s Algorithm - bl.ocks.org

Algorithm to generate a maze using random walk.
Download/i18nline: Keep your translations in line

I18n for Javascript.
substantial/updeep: Easily update nested frozen objects and arrays in a declarative and immutable manner.

Helper for Redux reducers.
google/re2: RE2 is a fast, safe, thread-friendly alternative to backtracking regular expression engines like those used in PCRE, Perl, and Python. It is a C++ library.

What I Touched This Week 2017-09-03

me@iany.me (Ian Yang) — Sun, 03 Sep 2017 00:00:00 +0000

Archiving OS X Mavericks tags (and other data) with git

Handful to create a snippets library using macOS tags in a git repository.
Effectively Using Matplotlib - Practical Business Python
Book: Python Data Science Handbook. Getting started data analysis usign numpy, pandas and matplotlib.

Upvoted SO Answers

Posts

Game Dev

Tools

extr0py/oni: Oni: An IDE powered by Neovim Neovim IDE frontend.
Chart Mage - Draw sequence diagrams and flowcharts at lightning speed.. Create chart online using plain text.

What I Touched This Week 2017-08-19

me@iany.me (Ian Yang) — Sat, 19 Aug 2017 00:00:00 +0000

How to convert arbirtrary simple JSON to CSV using jq? - Stack Overflow

What I Touched This Week 2017-08-06

me@iany.me (Ian Yang) — Sun, 06 Aug 2017 00:00:00 +0000

Programming

Source Directories Not Being Created In New Project – IDEs Support (IntelliJ Platform) | JetBrains

Check the option, otherwise the directories must be created manually before creating Java/Kotlin new files using context menu.
PostgreSQL’s Powerful New Join Type: LATERAL - Heap Blog

LATERAL scopes sub SELECT with columns in preceding FROM items. It is useful to query completed associative information in one SQL.
Auto raise Python Tkinter main window
Qt API设计原则 (译) | 酷壳 - CoolShell

debian apt-get update：public key 错误修复 - NILYANG

apt-get install debian-keyring debian-archive-keyring
apt-get update

Update using columns in joined table:

PostgreSQL

UPDATE A
SET A.c1 = expresion
FROM B
WHERE A.c2 = B.c2;

MySQL

UPDATE T1, T2,
[INNER JOIN | LEFT JOIN] T1 ON T1.C1 = T2. C1
SET T1.C2 = T2.C2,
T2.C3 = expr
WHERE condition

Design

Sketch App Awesomeness 👌 – Design + Sketch – Medium

Sketch tips.
weixin/WeSketch: A set of plugins for Sketch include drawing links & marks, UI Kit & Color sync, font & text replacing.

微信团队 Sketch 插件集

Misc

What I Touched This Week 2017-07-03

me@iany.me (Ian Yang) — Mon, 03 Jul 2017 00:00:00 +0000

Projects

What I Touched This Week 2017-06-25

me@iany.me (Ian Yang) — Sun, 25 Jun 2017 00:00:00 +0000

Projects

Mongoose ODM v4.11.0 MongoDB ORM for node.js
Dash by Plotly Data interactive visualization using Python.
jondot/react-flight: The best way to build animation compositions for React.

What I Touched This Week 2017-06-03

me@iany.me (Ian Yang) — Sat, 03 Jun 2017 00:00:00 +0000

Raymond Hettinger Modern Python Dictionaries A confluence of a dozen great ideas PyCon 2017 - YouTube

Details of Python dict performance tunning. It turns out that the techniques has already used in database index. The dict saves a list of records and a componion index mapping.
The Art of Lerp

Frequently used linear interpolation function.
Samsung’s Bizarre Emojis – Hacker Noon

Samsung Emojis are not consistent with others.
How to auto scroll textarea in JavaFX
♯ Resource Bundle In Intellij Tornadofx Gradle Project

Projects

facebook/react-vr: Create amazing 360 and VR content using React
osquery queries system stats using SQL.
Tad - A Desktop Viewer App for Tabular Data. Group and aggregate tabular data, such as SQLite, CSV.

What I Touched This Week 2017-05-28

me@iany.me (Ian Yang) — Sun, 28 May 2017 00:00:00 +0000

Bitcoin Paper
- Timestamps transactions by hashing them into ongoing chain of hash-based proof-of-work.
- The longest chain is the truth.
Lost Garden: Game design patterns for building friendships

Four key factors to build friendships
- Proximity: Regularly encounter each other, and it is easy to recognize one another.
- Similarity: Shared values, Connected.
- Reciprocity: Bi-directional exchanges with benefits to both parties.
- Disclosure: Trust by disclosing vulnerability.
Friendship: person with mutually beneficial long term relationship based off trust and shared values.
ashchan: 比特币、以太坊加密技术

关于比特币、以太坊区块链加密技术的分享。
How Basic Performance Analysis Saved Us Millions - Heap Blog

Found out reason why postgresql index took all the CPU using flame graph.
Inversion: The Crucial Thinking Skill Nobody Ever Taught You

Inversion forces you to consider aspects of a situation that are often hidden at first glance.

Game

中国独立游戏会好吗？

国内现状分析和前景展望。体量大，发展晚。
游戏中的“成长感”设计 The New Face In Entertainment - 知乎专栏
- 玩法技巧成长感
- 游戏设计的成长感
- 奖励带来的成长感

Projects

Misc

Wolfram + Raspberry Pi Project: A Wolfram Engine on Every Raspberry Pi Free Mathmatica and Wolfram for Raspberry Pi
100 Blocks a Day - Wait But Why Save your time!
如何在微信聊天记录中选中局部文字 | 一日一技 - 少数派
量产型炮灰工程师 · Ruby China
柯洁 0:3 AlphaGo，国内相关报道被管制，不允许直播

What I Touched This Week 2017-05-20

me@iany.me (Ian Yang) — Sat, 20 May 2017 00:00:00 +0000

我所養成的 10 個最有生產力習慣，以及我如何養成這些習慣

要有效的利用时间。通过记录清空大脑并减少下次相似事情时的成本。
Why you should totally switch to Kotlin – Magnus Vinther – Medium

For me, Kotlin is powerful, and is under control not like Scala.
…, and it is offically supported in Android Development.
The Horror in the Standard Library

libstdc++ is broken. Set GLIBCPP_FORCE_NEW, link jemalloc
“Why We Didn’t Use A Framework” (Case Study) – Smashing Magazine

… needed 100% control over the UX of the video call …

so they choose to use vanilla JavaScript.
和 Android 相比，人工智能才是 Google 更想介绍的：Google I/O 2017 回顾 - 少数派
- 主题：人工通知
- 产品：Google Assitant for iOS, Google Lens, Google Home, Android O, VR Headset.
Firebase Costs Increased by 7,000%! – Startups & Venture Capital

Due to a change in how they report data usage, our monthly costs for Firebase, a SaaS provided by Google, has increased from $25 a month to what is now moving towards the $2,000 mark — with no changes to our actual data use. This change was made without warning.

Do not lock your product to 3rd party service. Make it cheap to switch services.
golang IO包的妙用 - 简书

Read 和 Write 接口简单，容易组合
Gotchas when using ktor, a Kotlin web framework
- ktor-netty is buggy when used with ktor-websockets, use ktor-jetty instead.
- jetty-server should also be added as a dependencies when using ktor-jetty

Projects

Kawoou/FlexibleImage: A simple way to play with the image! Swift image library.
dgraph-io/badger: Fastest key/value store in Go.
Aerobatic - Professional static web publishing. Easy static web hosting solution.
Siege Home. An HTTP benchmark tool.
lovoo/goka: Goka is a compact yet powerful distributed stream processing library for Apache Kafka written in Go.
zetcd: running ZooKeeper apps without ZooKeeper | CoreOS. Proxy of etcd that acts as ZooKeeper server.
bloomberg/comdb2: Bloomberg’s distributed RDBMS

Misc

What I Touched This Week 2017-05-13

me@iany.me (Ian Yang) — Sat, 13 May 2017 00:00:00 +0000

Cocos2D-X TTF 字体排版，如何使用 FreeType 库进行字符排版。
CPU Utilization is Wrong. Check instructions per cycle (IPC) to see whether CPU is stalled
Beware of Transparent Pixels - Adrian Courrèges. Leaned bilinear filtering and color blending, and usage of premultiplied alpha.
“go build” became very slow after installing a new version of Go. It saved me when I found out I have to wait for minutes when running go run after several homebrew upgrades. I event spent time to profiling my app.

Programming

Fixing Unicode for Ruby Developers – DaftCode Blog. How to do unicode right in Ruby. Normalize unicode before performing serious text processing.
Can I execute a function after setState is finished updating?. Function setState can accepts a callback which will be invoked after stage is really changed and DOMs are updated.

Games

《Monsterologist》开发日志（十一）竞品学习：《精灵宝可梦》的怪物设计是越做越差了吗？ - 知乎专栏。各全面的怪物设计分析的分享。

Projects

hshoff/vx: react + d3 = vx | visualization components
Sh is a shell command wrapper for Python.
hobby-kube/guide: Kubernetes clusters for the hobbyist.
getinsomnia/insomnia: The most intuitive cross-platform REST API Client 😴

What I Touched This Week 2017-05-09

me@iany.me (Ian Yang) — Tue, 09 May 2017 00:00:00 +0000

macOS 如何在全屏 App 或拥挤的桌面间便捷拖动文件 - 少数派。不使用第三方软件的文件拖动技巧。
A serious bug in GCC | Andrzej’s C++ blog. Destructor not invoked when exception thrown in constructor/initializer
Prepack · Partial evaluator for JavaScript. Expand computations at compile-time.
Put your Electron app on a diet with Electrino – DailyJS – Medium. It provides a framework similar with Electron but with less size by reusing system web browser engine.
Why does Google prepend while(1); to their JSON responses? : programming。 It prevents JSON hijacking .
云风的 BLOG: 用 gdb 分析 coredump 的一些技巧. Gdb 以及 skynet 和 lua C 层调试技巧和一些底层介绍。
email - Mail Rules using JavaScript for Automation instead of AppleScript - Stack Overflow

function performMailActionWithMessages(messages) {
messages.forEach( function(message) { // if you want to iterate
})
};

Games

Flinthook：动静结合的Roguelite佳作 - 知乎专栏
【敖厂长】让你耳朵怀孕的FC游戏_单机游戏_游戏_哔哩哔哩. 使用扩展芯片有着出色 8bit 音乐的 FC 游戏。也是款不错的平台游戏，good ending 达成条件有些变态。

Tools

TestDrive/README.md at master · JohnSundell/TestDrive · GitHub. Playground of any Swift pod or framework.
GitHub - timothycrosley/hug at stackshare A python HTTP framework.
ilovepdf, a collection of online PDF utilities.
K6, a modern load testing tool.

What I Touched This Week 2017-05-01

me@iany.me (Ian Yang) — Mon, 01 May 2017 00:00:00 +0000

Reading

碎片阅读如何形成知识体系？做笔记，分类阅读材料和个人时间并分配时间到不同分类的阅读材料。
使用 pip wheel 实现 Python 依赖包的离线安装。相当于 Ruby 的 bundle package
How to Use Excel’s Flash Fill and Auto Fill to Automate Data Entry. Flash Fill can fill by guessing extract pattern.
Here’s The Thing With Free Apps And Services - BuzzFeed News. There is no free lunch. “if you’re not paying for it, you’re not the customer, you’re the product.”
Create lean Node.js image with Docker multi-stage build. Multiple FROM and corresponding build section. The output image is built using the last FROM. 类似于 Daocloud 提供的 CI, safe build 功能。
Troy Hunt: Reckon you’ve seen some stupid security things? Here, hold my beer…How stupid!

References

Painting with Code : Airbnb Design. Generate Sketchapp document using code with React.
Timescale. Time seiies database based on PostgreSQL.
Ctrl+Paint - Digital Painting Simplified. Awesome site providing video courses to learn digital painting.
Simple calculation to render cheap water effects. An example to study shader.
Ant Design of React. A React component library.

What I Touched This Week 2017-04-24

me@iany.me (Ian Yang) — Mon, 24 Apr 2017 00:00:00 +0000

Programming

Functional programming design patterns by Scott Wlaschin - YouTube. Introduction to basic concepts in FP.
Working Of Yarn and npm – Rajan Tiwari – Medium. Why yarn is better than npm.
Hard-won lessons: Five years with Node.js | Scott Nonnenberg. Tips and gotchas.
NASA’s 10 Coding Rules for Writing Safety Critical Program - RankRed. Good references.
Python Fire is a library for automatically generating command line interfaces (CLIs) from absolutely any Python object.

Performance Tuning

Performance test frameworks: Gatling Load and Performance testing using Java, and Locust using Python.
Android performance tool: Tegra Graphics Debugger from NVIDIA and Snapdragon Profiler from Qualcomm.
Twitter Lite and High Performance React Progressive Web Apps at Scale
- and how to improve Infinite List and React.
- The performance metric Flame Graphs used in the post,
- and chrome addons for React performance test

Game Development

Quaternion Rotation - YouTube. Explanation of Quaternion.
Godot Engine - Free and open source 2D and 3D game engine. Yet another game engine.

Projects

nickelser/zhong: Reliable, distributed cron in Ruby.
electron-userland/electron-forge: A complete tool for creating, publishing, and installing modern Electron applications
anbox/anbox runs Android using Linux container technologies.
Qt binding for Golang
Flow: A Static Type Checker for JavaScript. Like go fmt but for JavaScript.

Misc

Chrome and Firefox Phishing Attack Uses Domains Identical to Known Safe Sites. Fake site using unicode domain.
Mastering Group Resizing Feature in Sketch – Design + Sketch. How to design responsible components using group resizing.
α Clock – 壁纸与时间联动，「索大好」带来世界文化遗产的一天 - 小众软件. 很漂亮的 Android 壁纸应用。
CG 绘画入门：零基础如何学习数位板绘画？ - 知乎，ARTLESSON Theory | 如何提高你的绘画和设计技巧
设计界出了一件大事儿！ ARKie 是一个智能设计助手，聚焦于中英文排版、秒级自动生成作品。10秒，帮你完成一个设计。
Windows 软件推荐，菲菲更名宝贝之得意非凡 v3.0 正式版，Windows 上有什么鲜为人知的好软件？| 自爆区 #023

What I Touched This Week 2017-04-16

me@iany.me (Ian Yang) — Sun, 16 Apr 2017 00:00:00 +0000

各种加密代理协议的简单对比 – Yachen Liu 比较了常用的 HTTPS，SOCKS5-TLS 和 shadowsocks 等加密协议。
ChrisRx/dungeonfs: A FUSE filesystem and dungeon crawling adventure game engine. Brilliant to map MUD game to filesystem.
TypeScript at Slack. How Slack migrate to TypeScript and the migration guidance.
Fast Drawing for Everyone. It can suggest nice clipart according to drawing.
Shields.io: Quality metadata badges for open source projects. All in one place to find badges for the project.
Robert Haas: New Features Coming in PostgreSQL 10. Many features for distributed PostgreSQL.
Use JetBrains Rider as Unity3D C# IDE.
Wedding at Scale: How I Used Twilio, Python and Google to Automate My Wedding
树莓派入门指南很详尽，很全面。
他热衷拍摄人与建筑的微妙关系，为了不同视角冒险爬上城市高空。热衷于「爬楼」拍摄的独立摄影师的访谈。
Read a specific length data from socket in Python

Use a memoryview to wrap your bytearray:
buf = bytearray(toread)
view = memoryview(buf)
while toread:
nbytes = sock.recv_into(view, toread)
view = view[nbytes:] # slicing views is cheap
toread -= nbytes

What I Touched This Week 2017-04-09

me@iany.me (Ian Yang) — Sun, 09 Apr 2017 00:00:00 +0000

Last week I made a tool to preview Live2D models in batch, and back port TTF outline patch to cocos2d-x quick community edition.

3pjgames/live2dviewer: Live2D 模型批量查看器使用 Unity3D 实现的桌面工具。
doitian/nfd-unity3d. Native file dialog used in live2dviewer.
Fix ttf outline effect · PR #76 · u0u0/Quick-Cocos2dx-Community TTF outline patch back ported from official cocos2d-x master branch.

Publications

OmniGraffle 绘制图片作为中心的思维导图

Misc

A Programmer’s Introduction to Unicode – Nathan Reed’s coding blog.
Rerere Your Boat…. Remember and replay git conflict merge strategy.
Module ngx_http_limit_req_module, API rate limiting.
How To Set Up An Automated Testing System Using Android Phones (A Case Study) via Smashing Magazine. Guide to buy devices and setup automated test.
sindresorhus/create-dmg: Create a good-looking DMG for your macOS app in seconds
Workflow Gallery by 少数派 - 聚合实用 Workflow 动作的中文分享站
Beautiful photos from Unsplash in your new Chrome tabs.
Gamesplanet: Game keys for Steam, Origin, Uplay, GOG and more. Online game retailer, from which I can buy some games which is not available in Chinese area in Steam.

What I Touched This Week 2017-03-25

me@iany.me (Ian Yang) — Sat, 25 Mar 2017 00:00:00 +0000

Choose SQL. Optionions about choosing between SQL and NoSQL.
- Bonus: MySQL’s JSON data type, Postgres’ JSON types and SQLite’s JSON extension.
Papers We Love - Papers from the computer science community to read and discuss.

What I Touched This Week 2017-03-18

me@iany.me (Ian Yang) — Sat, 18 Mar 2017 00:00:00 +0000

Programming

Golang Slice Tricks
How To Develop An Interactive Command Line Application Using Node.js
Cloudify is an infrastructure bootstrap tool using Python.
redux-saga, an alternative side effect model for Redux apps using generator.
ctop is top for containers.
Windows: Vcpkg新增CMake构建库示例
Windows: Folder Can’t Delete - How to Remove FILES That Won’t Delete?
```
 rmdir /q /s your file name
```

Tools

Disable keychain access password prompt when use the Mac as CI server.

macOS login keychain settings

Personal text and file sharing between devices:
- Use Telegram to send text and small files.
- Use Resilio Sync to share large files.
Write some scripts to setup remote downloader on server using aria2c, Python and Resilio Sync.
macOS: Fix Long delays when moving/deleting files in finder: try trashing the file com.apple.Dock.plist from ~/Library/Preferences.
Connect Maker Webhooks to hundreds of other services. This is a powerful IFTTT service, which can connect all other services supported by IFTTT to/from web hook.
mermaid - Generation of diagrams and flowcharts from text in a similar manner as markdown.I found it via Chrome extension Surfingkeys.

What I Touched This Week 2017-03-05

me@iany.me (Ian Yang) — Sun, 05 Mar 2017 00:00:00 +0000

Allow password input in go get

env GIT_TERMINAL_PROMPT=1 go get xxxx

Getting the source directory of a Bash script from within
Vcpkg updates: Static linking is now available
and how to replace MD with MT when using static linking.
Rancher is a self hosted platform to run containers.
Pushpin is a reverse proxy to handle websocket connections.

Configure max number of open files in:

supervisor

[supervisord]
minfds = 1000000

upstart

limit nofile 1000000 1000000

/etc/security/limits.conf

* hard nofile 1000000
* soft nofile 1000000

What I Touched This Week 2017-02-25

me@iany.me (Ian Yang) — Sat, 25 Feb 2017 00:00:00 +0000

Enzyme React test.
Design Patterns for Humans™ - An ultra-simplified explanation
RandyGaul/tinyheaders: Collection of one-file C/C++ libraries with no dependencies, primarily used for games
Monaco Editor, code editor in Javascript with syntax highlight.
Favicon & App Icon Generator. Generate HTML meta and convert upload image to various format icons for website.
小丸工具箱, Windows 上的视频工具

What I Touched This Week 2017-02-20

me@iany.me (Ian Yang) — Mon, 20 Feb 2017 00:00:00 +0000

I had to work on Windows for a project, thus did some research to make it suck less.

Visual Studio product name and internal version numbers
The ultimate guide to Windows 10 keyboard shortcuts | Windows Central
Delete lang directory to force vim to use English.
How to Drag Files to the Taskbar to Open Them in Windows 7
VC++ package manager which can be used with cmake.

开始分享一些 Lua 的心得，这是第一篇 Lua C API 简介

Game Programming

Misc

Diff images by highlight differences using different colors.
Universal JS automation in OmniGroup apps
Opensource event automation, like IFTTT.
Swapping, memory limits, and cgroups - Julia Evans
Inter-Process Communication in macOS and iOS.
A trick to quote multiple line string. Pay attention that newline is not included.

What I Touched This Week 2017-02-12

me@iany.me (Ian Yang) — Sun, 12 Feb 2017 00:00:00 +0000

This week I have worked on Lua API of Sentry using its Objective-C and Android client.

Add extern "C" around Lua C function in header compiled as Objective-C.
LuaJavaBridge - Lua 与 Java 互操作的简单解决方案是很详细的在 Cocos2d-x Lua 中调用 Java 方法的文章。不过有个地方已经过时了，就是 Java 的方法可以接收和返回 HashMap, 和 Vector (用 ArrayList 也可以）两种复杂变量的。有一些限制，调用的时候 Lua 不能传 nil，HashMap 对应的 Lua table 的 key 和 value 都会转成 String，在 Java 中可以强转成 HashMap<String, String>。Vector 对应的 Lua table 会当成是 list，所有成员也会转成 String，在 Java 中可以强转成 Vector<String>。对应的类型签名如下
- Ljava/util/HashMap;
- Ljava/util/Vector;
- Ljava/util/ArrayList;
Sentry-Android is an open source library to report errors in Android apps to Sentry. It is better than official Java library in my opinion.

Misc

Install gems using system Ruby when installed rbenv/rvm.
```
 sudo /usr/bin/gem install --bindir /usr/local/bin --no-env-shebang cocoapods
```
- --bindir: the default /usr/bin is not allowed to be modified.
  - --no-env-shebang: just use system Ruby explicitly.
webmachine: A REST-based system for building web applications, A RESTful framework for Erlang.
Iris, A go web framework.
In Lua, following two statements are identicated:
```
 require "xx." .. foo
(require "xx.") .. foo
```
写了篇游戏分享：Shenzhen IO。花了一个多月备案，现在放在腾讯云上，改成了用 Hugo，加上了英文，中文多语言支持。

What I Touched This Week 2017-01-15

me@iany.me (Ian Yang) — Sun, 15 Jan 2017 00:00:00 +0000

This week I continue on cocos2d-x project automation build and dependencies management.

By default, tolua registers global variables. A trick to use fallback Lua implementation by default is:

# config.lua
if _G.config then
return _G.config
end
return { lua = true }

There is a gotcha to register tolua bindings in AppDelegate.cpp in Quick Community Edition, lua stack top is package.preload after quick_module_register.

If prebuilt library is added as a reference to Xcode project and it is not in SRCROOT of any project, its parent directory must be added to library search header in build settings.
Use preBuild.dependsOn(copyAssets) to do something before build in Android gradle project. It must be added to the gradle file which has added android plugin. For example, preBuild is not available in the top build.gradle in Quick Community
Why copy the key when traverse table in Lua c API

Game

腾讯开源手游热更新方案：Unity3D下的XLua技术内幕（一）_Gad-腾讯游戏开发者平台 GAD 上 XLua 的系列文章

Misc

MSDN, 我告诉你要下载微软老版本的开发工具可以来这找

Use https proxy in Emacs

 export http_proxy=xxx https_proxy=xxx
emacs -nw --insecure

What I Touched This Week 2017-01-08

me@iany.me (Ian Yang) — Sun, 08 Jan 2017 00:00:00 +0000

This week I was setting up cocos2d-x project automation build and dependencies management using masterless saltstack.

A minimum minion config, saved it as config/minion

id: local
file_client: local
minion_id_caching: False
root_dir: ./.salt
file_roots:
base:
- ./states
pillar_roots:
base:
- ./pillar

To include dynamic states and pillar roots, just generate the minion config file every time before invoking salt-call

Game

Tencent/xLua: xLua is a hot-fix solution plugin for Unity3D, it supports android, ios, windows, osx, etc. 腾讯开源的 Unity3d Lua 解决方案

What I Touched This Week 2017-01-02

me@iany.me (Ian Yang) — Mon, 02 Jan 2017 00:00:00 +0000

Busy in work chores this week.

Process can listen to ports under 1024 without running as root using sudo setcap cap_net_bind_service=+ep ./caddy. Learned from mholt/caddy.
Git Howto: Mirror a GitHub repo without pull refs | Christoph Rüegg

What I Touched This Week 2016-12-25

me@iany.me (Ian Yang) — Sun, 25 Dec 2016 00:00:00 +0000

This week I mainly worked on setting up monitoring system using prometheus and grafana.

Monitoring and Logging

Example of how to write a graylog output plugin
Add graylog2 stored data in grafana:
- Type: elasticsearch
- Connect to the configured elasticsearch instances used in graylog2
- Leave 『Index name』empty
- Time field name: timestamp
Prometheus client libraries keep all metrics, do not use keep increasing value as a tag, such as user id.
Rsyslog writes logs to file using user and group syslog

Misc

Recreate Postgres database on macOS installed via Homebew

 rm -rf /usr/local/var/postgres && initdb /usr/local/var/postgres -E utf8

Homebrew 镜像，和其它一些软件源镜像开源镜像使用帮助列表 [LUG@USTC]

Maven 镜像仓库

<mirror>
<id>nexus-aliyun</id>
<mirrorOf>*</mirrorOf>
<name>Nexus aliyun</name>
<url>https://maven.aliyun.com/repository/public</url>
</mirror>

An example that caches maven dependencies in Gitlab CI:

cache:
paths:
- .m2/
variables:
MAVEN_OPTS: "-Dmaven.repo.local=.m2"
maven_job:
script:
- mvn clean install

Automate game testing using image recognition
- Image Recognition for Android and iOS Game Testing
- Image Recognition in Mobile Game Testing
- 《腾讯Android自动化测试实战》也有在测试中使用 OpenCV 做图像识别的例子。
如何做一款有趣有毒的游戏：独立团队 Laser Dog 新游戏的幕后故事 - 少数派

What I Touched This Week 2016-12-17

me@iany.me (Ian Yang) — Sat, 17 Dec 2016 00:00:00 +0000

This week I was setting up monitoring system using Prometheus.

Some gotchas:

Both prometheus and alertmanager accept command line flag -web.external-url to configure URL used to access the site and API. But if the external URL set in alertmanager contains path portion, alert manager will prepend the path to all web endpoints, which means prometheus should also add the path even access alertmanager through localhost:9093.

Monitoring

My Philosophy on Alerting via Google Engineer.

Game Programming

A Study Path for Game Programmer. Books recommendations for game programmer.
cjson中的稀疏数组encode - bigcat133的专栏。用 cjson 输出日志的话，建议打开 encode_sparse_array
云风的 BLOG: 用分布式压缩贴图加快 Unity3D 的打包过程

Misc

Fabulous macOS Tips & Tricks
Implementation Details for OmniFocus 2.14 Automation - OmniFocus / OmniFocus for iOS. Both iOS and macOS version can import TaskPaper format now. In macOS, just paste into OmniFocus.
Subscribed Safari Books Online and started reading 『Mathematics for 3D Game Programming and Computer Graphics, Third Edition』on it.
Iconfont-阿里巴巴矢量图标库。很丰富，质量也不错的矢量图标库。

What I Touched This Week 2016-12-11

me@iany.me (Ian Yang) — Sun, 11 Dec 2016 00:00:00 +0000

This week I worked on setting up gralog2 for logging search and analysis.

Graylog

Gotchas

Extractors cannot copy numeric fields.
Timestamp cannot be overrided using numeric field which is Unix Epoch. Use GELF or a string field.

URI configuration

It is confused to configure Graylog various URIs

rest_listen_uri specifies interface, port and path that Graylog will bind and listen incoming API requests.
rest_transport_uri is URI used by other nodes in a cluster. The default is reset_listen_uri, but if rest_listen_uri contains wild interface 0.0.0.0, it is replaced with the first non-loopback IPv4 address.
web_listen_uri specifies interface, port and path that Graylog will bind and listen incoming WEB interface requests.
web_endpoint_uri specifies how JavaScript accesses Graylog API, it can be overrided in HTTP header X-Graylog-Server-URL.

Use case: the server intranet IP is 10.0.0.2, public IP is 1.2.3.4

# Listen on all interfaces so it can be accessed locally by NGINX, and other nodes in cluster
rest_listen_uri = http://0.0.0.0:9000/api/
# This is for other nodes in the intranet.
rest_transport_uri = http://10.0.0.2:9000/api/
# Also listen on all interfaces
web_listen_uri = http://0.0.0.0:9000/
# Set to NGINX or Load Balance address on all nodes
web_endpoint_uri = http://1.2.3.4:80/api/

Shell

I had added helper scripts to use fzf this week:

fasd_fzf Use fzf to select recently frequently used files or directories saved by fasd.
tmux-fzf-session Select a tmux session.
tmux-fzf-pane Select a tmux pane.

And their zsh completions

Also refactored a script to send text to tmux pane:

tt tmux send-keys wrapper

And tips I learned when implementing the scripts:

Indirect access variables in shell, zsh ${(P)a}, bash ${!a}.
Test if has prefix [[ test = t* ]]
Delete from array, zsh a[1]=(), bash unset a[1]

Check a value is in array in zsh:

${v[(i)value]} returns index of value in array

${v[(r)value]} returns value if it is in array, returns empty otherwise

[ "${array[(i)value]}" -le "${#array[@]}" ]

zsh-users/zsh-completions: Additional completion definitions for Zsh is a good getting started manual for zsh completion. Helper _arguments is enough for most simple command completion.

Misc

What can I do when my SSH session is stuck? - Ask Different. I closed the terminal window before, that means I had to reopen the window to resume the work via SSH. Now I know I can close stuck session using ~.. If I want to run some local commands I can suspend SSH using ^Z.
The first argument indent in syslog C API openlog must be valid in every syslog calls because only the pointer is saved locally to prepend program name to every log. So it cannot be a stack char array in initialization function.
Service in skynet may call release before init returns in C service. I leads to segment fault if init accesses memory which is freed in release.
Koto, a d3js framework for reusable charts.
edvin/tornadofx: Lightweight JavaFX Framework for Kotlin. We use JavaFX to develop internal GUI tools.
Script Filter JSON Format - Workflow Input Objects - Alfred Help and Support. It is easier to develop a script filter in Alfred using JSON format now.
htop explained | peteris.rocks.
APT Cheat Sheet - Packagecloud Blog. I have used Ubuntu for years, but I still don’t know when to use apt-get, when to use apt-cache and when to use dpkg. It is better to save it in Evernote for office reference.
Dear JavaScript, – Medium. About open source community.

What I Touched This Week 2016-12-04

me@iany.me (Ian Yang) — Sun, 04 Dec 2016 00:00:00 +0000

This week I setup servers using SaltStack and continue automate building and deployment using Gitlab CI.

Saltstack

Pillar cannot access data in another pillar file.
- Reference pillar name instead, just like contents_pillar in file.managed.
mount.mounted does not format the disk, use blockdev.formatted first.
salt-call —id custom_id can overrides minion ID in command line, handful for test.

Hour to test Saltstack states

Create a docker image, install salt-minion and bats on it.
Configure minion to use local file client
Allow overriding pillar using an YAML file in test.
Use salt-call to apply states.
Use bats to verify.

A sample minion config:

file_client: local
file_roots:
base:
- /srv/states
- /srv/test/states
- /srv/formulas/users-formula
pillar_roots:
base:
- /srv/test/pillar
- /srv/pillar
ext_pillar:
- cmd_yaml: cat /srv/test/pillar.yml

Mount the project to /srv and run bats in docker.

Misc

In .gitlab-ci.yml, environment:url cannot contain invalid characters like { and }. Use $CI_BUILD_REF_NAME instead of ${CI_BUILD_REF_NAME} in URL .
Gitlab CI Runner on Mac sometimes stucks at fetching repository from gitlab because it asks to access login keychain and requires interactive password input.

Python3 version of curl

 python3 -c 'import urllib.request; print(urllib.request.urlopen("http://example.com").read().decode("utf-8"))'

and POST

 python3 -c 'import urllib.request; urllib.request.urlopen("https://gitlab.com/api/v3/projects/ID/trigger/builds", "token=TOKEN&ref=REF".encode("utf-8"));'

How to avoid Go gotchas · divan’s blog. Delve into details to avoid gotchas.

Python: 会打扮的装饰器 · FunHacks
Use root to read file but authenticate using another user /usr/local/bin/rsync -e "sudo -H -u user ssh" -av file server:

What I Touched This Week 2016-11-27

me@iany.me (Ian Yang) — Sun, 27 Nov 2016 00:00:00 +0000

This week I worked on syslog integration in skynet and delve into details of skynet. I also started using Gitlab CI.

skynet

云风的 BLOG: 代理服务和过载保护。使用 debug 命令 PING 可以检查服务是否还在，目前平均响应时间怎么样。命令 LINK 可以用来监控服务是否退出。

弄了一套脚本来编译，安装 skynet，生成和管理 skynet 项目。大概用起来

# 创建项目 helloworld
sx new helloworld
# 启动 skynet 应用
cd helloworld
sx skynet boot/helloworld.lua
# 创建新的 skynet 应用
sx new-app server
sx skynet boot/server.lua
# 执行 Lua
sx lua

Gitlab CI

Gitlab documentation does not mention how to setup docker registry key. Indeed, it requires a pair of RSA keys, use private key in Gitlab and public key in docker registry.

In .gitlab-ci.yml, variables defined in job level is also effective in top fields, such as before_script and services. Here is an example to test Rails using MySQL and Postgres

image: rails
services:
- redis
- $DB
cache:
key: bundle
paths:
- vendor/bundle
variables:
POSTGRES_DB: center_test
POSTGRES_USER: runner
POSTGRES_PASSWORD: ""
MYSQL_DATABASE: center_test
MYSQL_ROOT_PASSWORD: root
before_script:
- cp config/database.ci-$DB.yml config/database.yml
- cp .ci.env .env
- bundle install --jobs $(nproc) --path=vendor/bundle
.test: &test_template
script:
- bundle exec rake db:create RAILS_ENV=test
- RAILS_ENV=test bundle exec rake db:reset
- bundle exec rake test
test_pg:
<<: *test_template
variables:
DB: postgres
test_mysql:
<<: *test_template
variables:
DB: mysql

Using Docker Build - GitLab Documentation. I use dind to build docker images in Gitlab CI. It requires starting docker in privilege mode, which breaks some containers such as mysql. A simple solution is registering 2 docker runners, one is in privilege and another is not. Tag runners and add tags in .gitlab-ci.yml to filter runner.
In Mac, gitlab-ci-multi-runner must be started in user desktop environment. The runner may stuck at checkout code because the GUI is asking for keychain access. Just approve the access in desktop environment.

DevOps

GitHub - 3pjgames/terraform-provider-dnspod: Terraform Provider Plugin which manages DNS records in dnspod.cn
ubuntu - How can I selectively override some A records on a Bind DNS Server? - Server Fault. I need to override some A record to speed up internal SVN and Git access in Office. I used to setup zone file for the whole domain. However if I need to update DNS records, I have to update office zone config files and update in DNS provider. This solution saves my time, thanks a lot.
服务发现：Zookeeper vs etcd vs Consul - DockOne.io. Etcd does only one thing, Consule is more feature rich.

Backing up your minions’ databases to the Salt master. Let minion push files to master.

Misc

最近转到 Bear 作为主力笔记应用
GitHub - tj/git-extras: GIT utilities — repo summary, repl, changelog population, author commit percentages and more. Bundle of useful git commands.
GitHub - tpope/vim-eunuch: eunuch.vim: helpers for UNIX. I love Rename.
Bugsnag Blog - Benefits of using tmux - lessons from streamlining a development environment

how to remove Google’s secret update software from your mac |.

A shining example of how to teach – Signal v. Noise

What I Touched This Week 2016-11-13

me@iany.me (Ian Yang) — Sun, 13 Nov 2016 00:00:00 +0000

This week I continue work on log system. I wrote a tool to sync Gitlab Issues with a Excel file.

Logging System

How to use syslog in skynet:

use syslog instead of logger · jintiao/some-mmorpg@cf7ed70 · GitHub. This is a merge request that using syslog in a real skynet project.

lsyslog is a Lua library using syslog C API.

Sync GUI Tool

JavaFX 8 Tutorial - Part 1: Scene Builder | code.makery.ch
Java POI
- Insert and read hyper link in Excel using Java POI – Ian Yang – Medium
- POI provides API to list all images using Workbook.getAllPictures(), but it has no image position information nor any caption, name information.

Gitlab Upload API requires multipart to upload file
- Upload files from Java client to a HTTP server

Misc

落格输入法 - 专业双拼强烈推荐的一个 iOS 上的双拼输入法。贴近原生不需要完全访问权限，而且支持小鹤形码。不过因为 macOS 上没有让人满意的小鹤双形的方案，还是用回了五笔。清歌五笔输入法在 macOS 和 iOS 上都很好用。

利用 Nginx 的 ngx_http_image_filter_module 做实时的图片缩略图 · Ruby China
What’s Coming in Go 1.8 | tylerchr. Library plugin is useful to develop plugin based solution.

What I Touched This Week 2016-11-06

me@iany.me (Ian Yang) — Sun, 06 Nov 2016 00:00:00 +0000

This week I worked on rsyslog research and management. The work on terraform-provider-ucloud is postponed.

rsyslog

Use template in output action

$template PJL_Format,"%timegenerated%|%HOSTNAME%|%syslogtag%|%msg%\n"
$template PJL_File,"/tmp/local-%programname%.log"
local6,local7.* ?PJL_File;PJL_Format

Use tag to filter log. Facilities are fixed and cannot add new custom facility, but app can specify arbitrary tag. The tag format is programname[PROCID]
Syslog::Logger in Ruby reserves higher priorities (crit, alert and emerge) for system message. The mapping to Logger severity is one level lower:
- Ruby -> syslog
- debug -> debug
- info -> info
- warn -> notice
- error -> warning
- fatal -> err
Ruby 2.0 cannot specify facility when creating Syslog::Logger, 2.2 has the third parameter to specify the facility.
20.2. Basic Configuration of Rsyslog via Redhat

Game

Management

Why you should argue with your employees 适当的争吵
出口就容易伤人？试试“三明治法则”吧！表扬，批评，期望

Misc

Moving away from puppet: SaltStack or Ansible? | Ryan D Lane Comparison between SaltStack and Ansible. The author prefers SaltStack.
Need to specify --with-opt-dir on OSX 10.11 El Capitan. · Issue #718 · puma/puma Bundle can configure build options for specific gem: bundle config build.puma --with-opt-dir=/usr/local/opt/openssl
tencent/libco. Coroutine for C, from WeChat team.

What I Touched This Week 2016-10-30

me@iany.me (Ian Yang) — Sun, 30 Oct 2016 00:00:00 +0000

This week I work on terraform-provider-ucloud, which already has implemented resource UHost and SecurityGroup, data source host image. I plan to share my experience to write a terraform provider plugin in future posts.

terraform-provider-ucloud

Paw 里进行 UCloud API 签名验证 – Medium
golang - 如何判断字符是不是中文？ - SegmentFault 用[\p{Han}]+
terraform/helper/resource/testing.go is helper for provider testing. Set environment variable TF_ACC to run the acceptance test.
dnaeon/go-vcr: Record and replay your HTTP interactions for fast, deterministic and accurate tests

Game Development

【十一充电】十五年经验网易高级美术总监：详解次世代MMO流程管理及设计理念

Management

Becoming a CTO // Juozas Kaziukėnas
Culture: Drafting your team’s Constitution How Parsable Builds their Company Culture.

Tools

I switched to Paste – smart clipboard history manager for Mac from Copied. I like Paste UI and the simplicity to pin copied items into list.
You don’t need more than one cursor in vim – Medium Use cgn and . to replace is handy.
使用 Alfred 提高你的工作效率 | Matrix 精选 - 少数派
vitorgalvao has shared many useful Alfred workflows. He is also a top contributor in Packal.

Misc

没有了老师，你该如何学习？ – ThoughtWorks洞见，技术的执念 – ThoughtWorks洞见和 The path of software development craftsmanship 都提到了应该避免被层出不穷的技术牵着鼻子走，静下心来把时间投资在底层和顶层不怎么变的技术上，中间易变的用到什么学什么。
Task Performance Indicator: A Management Metric for Customer Experience · An A List Apart Article. It Introduced TPI to measure customer experience and how Cisco uses it to improve products.
How Uber Manages a Million Writes Per Second Using Mesos and Cassandra Across Multiple Datacenters - High Scalability -
Code Hoarders | 8th Light About Legacy Code and Code Quality.
Continuations : Our Need for Purpose and Recognition Importance of Recognition as Motivation.
Being More Than “Just the Programmer” Next steps to be a better programmer.
Become a Better Coder by Keeping a Programming Journal However I prefer digital journal, since it is simple to keep links and I can click to open them.
Podcast Job PreservationFirst of a short series about the business of dying.

Bookmarks

LightNote This site is an attempt to teach you just enough essential music theory to take you from a tab-reader to a music creator!
Kong - Open-Source API Management and Microservice Management. API Gateway built on Nginx.
Vue Material Material theme for vue.js
Netflix/chaosmonkey: Chaos Monkey is a resiliency tool that helps applications tolerate random instance failures.

What I Touched This Week 2016-10-22

me@iany.me (Ian Yang) — Sat, 22 Oct 2016 00:00:00 +0000

Programming

How to write terraform provider plugin. Read the brief official documentation. Follow this vsphere plugin to see sample main.go and builtin vms provider as the reference. Must read files: provider.go and resource_aws_instance.go. My project is terraform provider ucloud.
云风的 BLOG: 继续谈网络游戏的同步问题分两个 model 分别同步共享状态和私有状态。如果出现冲突服务器将修正的操作的参数再通知回客户端。
Lessons Learned from Scaling Uber to 2000 Engineers, 1000 Services, and 8000 Git repositories - High Scalability -. Introduce the micro services architecture in Uber, the cons and pros and experience.
How to correctly use context.Context in Go 1.7 – Medium How to use context and how to not abuse context values.
go - Separating unit tests and integration tests in GoLang (testify) - Stack Overflow The difference of using build flag integration and short test flag is that: integration build flag does not run integration test by default, and short flag will run all tests.

Game Development

Scott Brodie (@brodiegames) tweets about builtin support of circular UIs in Unity
NGUI三大基础机制 NGUI 渲染底层的一些分享

Web Development

Debunked: 10 Misconceptions about AMP What AMP is not. It is also a good introduction to AMP.

Management

All you ever wanted to know about all-hands (but were afraid to ask) – Medium Share why and how to run all-hands.

Tips

How to make “spoiler” text in github wiki pages? - Stack Overflow How to create collapsed section using HTML tag details and summary.

Open Source Projects

Microsoft/LightGBM a fast, distributed, high performance gradient boosting framework.
Disney open source projects

Apps and Tools

Woboq Code Browser - Explore C++ code on the web Semantic info is extracted using LLVM.
A Sharper Scaling Image upscaling tool.
coala One command to lint code in many different languages.

Game

Don’t Starve 中文维基

Misc

Jean-Marc Denis - Black Black wallpapers for phone and desktop.
Tech Tips, Tricks & Trivia: Tips for more effective white-boarding
中文文案排版指北

What I Touched This Week 2016-10-15

me@iany.me (Ian Yang) — Sat, 15 Oct 2016 00:00:00 +0000

Programming

动作手游实时PVP技术揭密（服务器篇）帧同步、可靠 UDP和防作弊技术
Yarn: A new package manager for JavaScript Like bundler for gems in Ruby
A Review of Immutability in Ruby Use Immutability data in Ruby using standard libraries and gems.

Readings

How to read a book a week Read every day. Focus on one book and make small progress daily.

Tips

How do I remove an app from Security/Accessibility

sudo sqlite3 /Library/Application\ Support/com.apple.TCC/Tcc.db
delete from access where client like "%appnamehere%"

Replace “appnamehere” with the name of the app as it appears in the Accessibility list (keep the % signs). ```

Show hidden files in macOS Sierra Finder Shift + Command + .

Install Python modules for ansible installed by Homebrew

 cd /usr/local/Cellar/ansible/2.1.2.0/libexec/lib/python2.7/site-packages
PYTHONPATH=$(pwd) python easy_install.py -ad $(pwd) redis
```

Clearing the Icon Services cache in Yosemite
Advanced Vim macros Dump macro, edit and save back to register. Run macro on scope using normal
Vim anti-patterns | Arabesque Usage of gi, g;, g,. Use s as motion after action. Use @: to repeat command, & and g& to repeat substitution.

Tools

Launchpad Manager - Keep your Launchpad organised! Manage macOS Launchpad with less pain
Tickeys | 找对打字的感觉 | YingDev
docopt/docopt: Pythonic command line arguments parser, that will make you smile

Misc

Dash and Apple: My Side of the Story A popular app for developer has been removed from apple store, and here is the story from the author.

~iany/ Journals

What I Touched This Week 2026-03-30

Convincing vs Persuading in Technical Work

Scale-First AI Thinking and Mental Models

Boring Tech, Better Practices, and Tooling Leverage

Obsidian Links

What I Touched This Week 2026-03-21

Software Maintenance and the Specification Problem

AI Agents and the Harness

Simplifying Life Through Lifestyle Design

Obsidian Links

What I Touched This Week 2026-02-07

Haskell: Typeclassopedia, IO, and Documentation

Use Bun for Shell Scripts

How I Estimate Work

Obsidian Links

What I Touched This Week 2026-02-01

Haskell Type Classes: Functors, Applicatives, and Monoids

Using tmux for PowerShell in Windows Terminal

Elite Performance Through Preparation

Obsidian Links

What I Touched This Week 2026-01-24

Erlang State Machine Patterns in Rust

BFT Consensus Protocol Comparisons

CKB Virtual Transactions

Obsidian Links

What I Touched This Week 2026-01-17

Temporal Patterns and Bitemporality

Go Performance Optimization Techniques

JDK Selection Guidelines

Obsidian Links

What I Touched This Week 2026-01-10

Learning C23: Going Behind the Curtain of Modern Systems

Time Management and Reflective Living

Formal Methods: Exploring Quint and TLA+

Obsidian Links

What I Touched This Week 2026-01-03

Training the Idea Muscle: Quantity Over Quality

Slowing Down to Go Deeper

Learning Tacit Knowledge: Copying Better

Obsidian Links

What I Touched This Week 2025-12-27

State Machines for Simplifying Complex Logic

Tokio and Async Rust Patterns

Clean Code: Maintenance as the Core of Software

Obsidian Links

What I Touched This Week 2025-12-20

The Ladder of Abstraction in System Design

AI Investment Bubble and Infrastructure Economics

Becoming AI-Native in Daily Workflows

Obsidian Links

What I Touched This Week 2025-12-13

Social Architecture and Open Source Community Building

AI-Assisted Development and Learning

Git Workflow Improvements

Obsidian Links

What I Touched This Week 2025-12-06

Fuzzing Strategies from TigerBeetle

Lightning Network Mobile Nodes and Self-Custody

Think First, AI Second

Obsidian Links

What I Touched This Week 2025-11-29

Software Design Insights from TigerBeetle

Self-Consistency Over Self-Discipline

Effective Reading Strategies

Obsidian Links

What I Touched This Week 2025-11-22

AI Tools I’m Using

Work Stuff

Reading

1. Intentional Goals vs. Traditional Goal-Setting

2. Cursor’s Elite Engineering Culture

3. Human-AI Collaboration in Knowledge Work

Obsidian Links

What I Touched This Week 2021-03-06

Reading

GitHub Skyline

Funny

What I Touched This Week 2021-02-27

What I Touched This Week 2021-02-21