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On compiling 34 year old C code
The 34 year old C code is the C code for ed and sed from Unix Version 7. I’ve been getting it to compile on a modern POSIXish system. Some changes had to be made. But not very many. The union…
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Software Engineering
The most popular blog posts about software engineering on Hacker News. 14,540 posts.
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Building a Game with the Real Engine
Some people make games using the Unreal Engine. That’s nice, but I wanted something a little different. That’s why I’m using the Real Engine.
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SDL2 common mistakes and how to avoid them
SDL has grown on me over the past year. I didn’t understand its value until viewing it in the right lens: as a complete platform and runtime replacing the host’s runtime, possibly including libc. Ideally an SDL application links exclusively against SDL and otherwise not directly against host libraries, though in…
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JetBrains IDE Remote Code Execution and Local File Disclosure
TL;DR From at least 2013 until May 2016 JetBrains' IDEs were vulnerable to local file leakage, with the Windows (EDIT: and OS X) versions …
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Bret Victor's live editable game in ClojureScript
Taking Bret Victor's notion of connecting to your creation and turning it into a ClojureScript live game editor.
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What I learned from making a DNS client in Rust
A lot about sockets, syscalls and bits
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Animated guide to Symex: Emacs structural editing with Lisp
[This is about Symex.el , the Emacs extension for structural editing with Lisp. If you are unfamiliar with Symex, you could read the post introducing it , or TL;DR: just know that “symex” is short for Lisp symbolic expression / S-expression, and this extension provides a full-featured modal interface / Evil state for…
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After 41 years, my first assembly program on my first computer, the Tomy Tutor
We got it in 1983, I think, so it only took me about 41 years to get around to it. This Tomy Tutor isn't a replacement system I secondarily ...
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From string to AST: parsing (2019)
Whether you have to do with data in the form of CSV, JSON or a full-blooded programming language like C, JavaScript, Scala, or maybe a query language like SQL, you always transform some sequence of characters (or binary values) into a structured representation. Whatever you’ll do with that representation depends on…
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I now have Rust code for executing executables
Day 45: I now have Rust code for executing executables!
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Software, from First Principles
How electrons flowing through billions of microscopic switches etched into silicon become arithmetic, memory, and the software you use every day.
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From Zero to QED: An informal introduction to formality with Lean 4
An informal introduction to formality in Lean 4
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Smooth Voxel Terrain, Part 2 (2012)
Last time we formulated the problem of isosurface extraction and discussed some general approaches at a high level. Today, we’re going to get very specific and look at meshing in particular.…
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Trade-offs between Different CRDTs
🔰If CRDTs are new to you, here are some introductory links. - An interactive intro to CRDTs - An introduction to state-based CRDTs - CRDTs for non-academics - CRDT: The Hard Parts - Readings in CRDTs - crdt.tech What are the trade-offs between different kinds of CRDTs (Conflict-free Replicated
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Decompressing a Gzip File by Hand
2024 Update: Part 2 is out! Let’s make a gzipped file and see what’s in it. We’ll keep it simple: just write 8 ‘a’s to a file. $ echo "aaaaaaaa" > test.out $ xxd test.out 00000000: 6161 6161 6161 6161 0a aaaaaaaa. As we can see, our file is 9 bytes long. We have 8 ‘a’ bytes written, plus a Line Feed (LF) character…
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Darts, Dice, and Coins: A beautiful article on a beautiful algorithm
Earlier this year, I asked a question on Stack Overflow about a data structure for loaded dice . Specifically, I was interested in answering this question:
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PyPy's future directions
The PyPy project was long criticised for being insufficiently transparent about the direction of its development. This changed drastically w...
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The future of latency profiling in Go
The roadmap for latency profiling in Go
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Contributing to Chromium: An Illustrated Guide
Monica Dinculescu's blog
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Jumping Back and Forth
The order that our mind imagines is like a net, or like a ladder, built to attain something. But afterward you must throw the ladder away, because you discover that, even if it was useful, it was meaningless.
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How Hamming codes work
Detecting (and correcting) errors in digital signals.
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ytr: YouTube Radio for Emacs
I've been a happy ready-player user for some time now. I consider the Emacs package fairly feature-complete, for my needs anyway. Well almost. While I...
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Emulator basics: a stack and register machine
Writing an x86 emulator from scratch in JavaScript: 1. a stack and register machine
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Literate programming: Knuth is doing it wrong (2014)
Literate programming advocates this: Order your code for others to read, not for the compiler. Beautifully typeset your code so one can curl up in bed to read it like a novel. Keep documentation in sync with code. What's not to like about this vision? I have two beefs with it: the ends are insufficiently ambitious by…
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What MongoDB got right
MongoDB is perhaps the most-widely-mocked piece of software out there right now. While some of the mockery is out-of-date or rooted in misunderstandings, much of it is well-deserved, and it’s difficult to disagree that much of MongoDB’s engineering is incredibly simplistic, inefficient, and immature compared to…
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Writing Python like Rust (2020)
Listen, I didn’t plan on making a whole ‘writing X like Y’ series. But here we are.
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I Got Sick of Remembering Port Numbers
So I built local.vibe — a friendly dashboard and local .vibe hostname for every local web app on your Mac. No more localhost:3000 vs localhost:5173 roulette.
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