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Model-Based Testing for Dungeons & Dragons
Igor's programming blog
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The latest blog posts to take off on Hacker News. 1,422 posts.
992
How Complex is my Code?
What code complexity can mean — from Big O notation and Cyclomatic Complexity to the surprising insights psycholinguistics can offer software developers.
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994
The cult of vibe coding is dogfooding run amok
Bad software is a choice you make
995
Number in man page titles e.g. sleep(3)
If you do Linux systems programming, you will have likely pored over man pages, either on the command line or, my personal preference, using the excellent man7.org or linux.die.net. I’ve always seen …
996
A whole boss fight in 256 bytes
Endbot is a complete audio-visual demo that fits in exactly 256 bytes . It runs under DOS (via DosBox-X) and renders in real-time: a robot sprite with progressive bullet damage, a growing explosion, a scrolling checkerboard landscape, and a MIDI soundtrack - all from a single tiny .com file.
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Microsoft hasn't had a coherent GUI strategy since Petzold
A few years ago I was in a meeting with developers and someone asked a simple question: “What’s the right framework for a new Windows desktop app?” Dead silence. One person sugges…
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Running Gemma 4 locally with LM Studio's new headless CLI and Claude Code
LM Studio 0.4.0 introduced llmster and the lms CLI. Here is how I set up Gemma 4 26B for local inference on macOS that can be used with Claude Code.
1000
A tail-call interpreter in (nightly) Rust
Exploring tail-call-style interpreter implementation with an optimized Uxn emulator, on ARM, x86, and WebAssembly
1001
Eight years of wanting, three months of building with AI
For eight years, I’ve wanted a high-quality set of devtools for working with SQLite. Given how important SQLite is to the industry1, I’ve long been puzzled that no one has invested in building a …
1002
I imported the full Linux kernel git history into pgit
I imported the entire Linux kernel git history into pgit's PostgreSQL-backed storage. 1,428,882 commits, 24.4 million file versions, 20 years of development. Here's what the kernel looks like when you can just ask.
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Union types in C# 15
C# 15 introduces union types — declare a closed set of case types with implicit conversions and exhaustive pattern matching. Try unions in preview today and see the broader exhaustiveness roadmap.
1004
Floating point from scratch: Hard Mode
Actually building floating point from scratch!
1005
Components of a Coding Agent
How coding agents use tools, memory, and repo context to make LLMs work better in practice
1006
SQLite in Production: Lessons from Running a Store on a Single File
Run Rails on SQLite with WAL and Docker volumes while accounting for the concurrency failure that appears during blue-green deploys.
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Signals, the push-pull based algorithm
We have been using Signals in production for years via several modern front-end frameworks like Solid, Vue, and others, but few of us are able to explain how they work internally. I wanted to dig into it, especially diving deep into the push-pull based algorithm, the core mechanism behind their reactivity.
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Big-Endian Testing with QEMU
In computing, the terms big endian and little endian refer to the order in which a value's bytes are stored in memory: with the most significant (big) or least significant (little) part first.
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Slightly safer vibecoding by adopting old hacker habits
I have seen a lot of public discussion around supply-chain attacks on the Python ecosystem, prompt injection risks when using coding agents,...
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We replaced RAG with a virtual filesystem for our AI documentation assistant
We replaced expensive sandboxes with ChromaFs, a virtual filesystem over Chroma, to give our docs AI assistant the ability to explore documentation like a developer would.
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Cursor 3
Cursor 3 is a unified workspace for building software with agents.
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Modern SQLite: Features You Didn't Know It Had
SQLite has evolved far beyond a simple embedded database. Explore modern features like JSON, FTS5, window functions, strict tables, and more.
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Bringing Clojure programming to Enterprise (2021)
How a dialect of LISP can help developping modern enterprise applications
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Signing data structures the wrong way
Domain separation bugs have bitten Bitcoin, Ethereum, TLS, and AWS. Snowpack solves this by embedding random domain separators directly in the IDL.
1015
Cohere Transcribe: Speech Recognition
Unmatched accuracy and speed. Transcribe converts your business’ audio data into precise text for search, analytics, and automation.
1016
Fast and Gorgeous Erosion Filter
This blog post and the companion video both explain an erosion technique I’ve worked on over the past eight months. The video has lots of e...
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Vulnerability research is cooked
Vulnerability discovery has always been gated by elite attention. Elite attention is now abundant. What happens next?
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Intuiting Pratt Parsing
You already know that a + b * c + d is calculated as a + (b * c) + d. But how do you encode that knowledge precisely enough for a machine to act on it?
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Good CTE, Bad CTE
The planner treats CTEs very differently depending on how you write them. Here's what happens under the hood, version by version, through PostgreSQL 18.
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VHDL's Crown Jewel
How VHDL preserves determinism In this post, I would like to talk about VHDL’s crown jewel: how it preserves determinism in a concurrent language. Here is a figure of how it works: