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Simulating water over terrain
If you don't want a long an boring introduction, skip directly to the virtual pipes method description . I will get a little bit sad if you do this, though x)
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The latest blog posts to take off on Hacker News. 49,204 posts.
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Implementing a Game Boy emulator in Ruby
Introduction I created a Game Boy emulator in Ruby and released it as a gem called rubyboy! (I’d be happy if you could give it a star!) And now it runs in the browser using WebAssembly! Try the demo in your browser! Screenshots Rubyでゲームボーイのエミュレータを作りました！ カラー対応やWasmでブラウザ対応もやっていきたい💪 GitHub: https://t.co/hFwmZD6FNp…
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Programming SDF animations of Rick and Morty
An interactive guide on making animations on the GPU
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I believe 6502 instruction set is a good first assembly language
Why I believe 6502 instruction set is a good first assembly language
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What does it mean that MP3 is free?
The MP3 format, once the gold standard for digital audio files, is now free. The licensing and patents on MP3 encoders have expired, meaning you can now include them in your applications without payin
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Of Course It's a Coup
Miss the obvious, lose your republic
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Okta Bcrypt incident lessons for designing better APIs
Hello there! If you follow tech news, you might have heard about the Okta security incident that was reported on 1st of November. The TLDR of the incident was …
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The Sudoku Affair
Software design is a deliberate process, and requires deliberate effort.
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Ingesting PDFs and why Gemini 2.0 changes everything
Sergey Filimonov's blog
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Are LLMs able to notice the “gorilla in the data”?
One paper that caught my attention a bit ago was Selective attention in hypothesis-driven data analysis by Itai Yanai and Martin Lercher. In their study, students who were given specific hypotheses to test were much less likely to notice an obvious “gorilla in the data” compared to students who explored the data…
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You're missing your near misses
FAA data shows 30 near-misses at Reagan Airport – NPR, Jan 30, 2025 The amount of attention an incident gets is proportional to the severity of the incident: the greater the impact to the organizat…
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I'm Done with Ubuntu
A few busted upgrades and the heavy-handed push of a software packaging solution has ruined Ubuntu for me.
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S1: A $6 R1 competitor?
Principal AI Architect. Creator of open-strix, a harness for building agent teams. Writing about AI architecture, stateful agents, and what happens when you give AI memory.
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Software development topics I've changed my mind on
Software development topics I've changed my mind on over the course of a decade
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Go Data Structures: Interfaces (2009)
Go's interfaces—static, checked at compile time, dynamic when asked for—are, for me, the most exciting part of Go from a language design point of view. If I could export one feature of Go into other languages, it would be interfaces.
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Go Data Structures (2009)
When explaining Go to new programmers, I've found that it often helps to explain what Go values look like in memory, to build the right intuition about which operations are expensive and which are not. This post is about basic types, structs, arrays, and slices.
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The FAA’s Hiring Scandal
Inside a decade of struggle to bring a scandal to light
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I coded a Pascal compiler for transputer as a teen in 1993
History of the development of my Pascal compiler for transputer when I was age 13.
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Zig; what I think after months of using it
Ah, Zig . I have a love-hate relationship with this one. A “new” (reading: appeared a couple years ago , already — yes, already ), language with high ambitions. Zig was made to run at low-level, with a simple design to solve many problems C has (macros, allocators, error handling, more powerful types like baked-in…
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Nine – seemingly impossible C64 demo
Nine is a small, seemingly impossible C64 demo that I released at Fjälldata 2025.
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How I use LLMs as a staff engineer
What I use them for and what I don't
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Jujutsu VCS: Introduction and patterns
Jujutsu (jj), a new version control system written in Rust, has popped up on my radar a few times over the past year. Looked interesting based on a cursory look, but being actually pretty satisfied with Git, and not having major problems with it, I haven’t checked it out. That is, until last week, when I finally…
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Chat is a bad UI pattern for development tools
You don’t want to have a conversation with your computer, you want to build.
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Build a link blog like Simon Willison
Achieving Data Freedom Through Open Source and Rust
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Payments crisis of 2025: Not “read only” access anymore
If you are a current or former career Bureau of the Fiscal Service Employee, especially if you’re a legacy IT programmer with years of experience and especially if you are a COBOL programmer currently working on the PAM, SPS or any other adjacent team, contact me over email or
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Build your own SQLite, Part 4: reading tables metadata
As we saw in the opening post, SQLite stores metadata about tables in a special "schema table" starting on page 1. We've been reading records from this…
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The PS2’s backwards compatibility from the engineer who built it (2020)
As the PS2 turns 20 in Japan, a look back on its PS1 backwards compatibility from the eyes of the former Sony engineer responsible for it.
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Escaping surprise bills and over-engineered messes: Why I left AWS
Frustrated with AWS's complexity and cost risks, I switched to NearlyFreeSpeech for its prepaid model, ensuring financial control while keeping hosting simple and flexible.
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No-Panic Rust: A Nice Technique for Systems Programming
Can Rust replace C? This is a question that has been on my mind for many years,as I created and now am tech lead forupb, a C libraryfor Protocol Buffers. Th...