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The most popular blog posts about software engineering on Hacker News. 1,416 posts.
I once wrote a Perl subroutine that would memoize the subroutine that called it. That much was useful, but then it inserted a copy of itself into the caller, so that its callers would be memoized too. A well-placed call to aggressively_memoize could back-propagate to the whole codebase, spreading functional purity…
In this blog post, I will share the adventures I had creating my own LLM, from (almost) scratch, trained only on old texts. I made my own base-training and fine-tuning scripts, data processing pipelines and custom datasets. ("almost from scratch" means I did use existing programming languages and libraries, I didn't…
Neural networks are increasingly deployed through software stacks whose behavior is defined by tensor layouts, preprocessing choices, compiler boundaries, floating-point arithmetic, GPU kernels, and external model exporters. TorchLean is a Lean 4 codebase for neural network specification, execution, and verification…
An open-source multi-tag fully local UWB positioning system.
WASI P3 is almost here, bringing native async support to the WebAssembly System Interface (WASI) and Component Model. In this post, we’re looking to the next big milestone: a stable, formally specified Component Model 1.0.At February’s B...
AI changes rewrite economics because codebases with clear, common patterns get more leverage than proprietary or inconsistent systems.
When the address of a nested function is taken, GCC creates at trampoline at run-time. This trampoline is placed on the stack, which means that the stack has to be executable. This is problematic because a non-executable stack is an important security feature. For some time now, GCC has the option to place the…
What regular expression features work everywhere. Very few unless you relax your definition of "everywhere."
What YOLO26 is: NMS-free, edge-optimized YOLO with 43% faster CPU inference, benchmarks by size, licensing, and how it compares to RF-DETR.
<img src="http://stevehanov.ca/blog/images/acer.jpg"/> If you have a web site with a search function, you will rapidly realize that most mortals are terrible typists. Many searches contain mispelled words, and users will expect these searches to magically work. This magic is often done using levenshtein distance. In…
Go 1.24 replaced the built-in map’s bucket-based runtime with Swiss Tables. This article explains groups, control bytes, H1 and H2, probing, table growth, directories, deletion, load factor, and the experimental split-group layout.
A guide to bringing up the Linux Kernel and a userspace application on a new hardware (or in this case, a self-made emulator)
Define a simple, standard API for parsing and generating JSON documents so that doing so does not require an external library. Enable many JSON processing tasks to be accomplished with little coding. This is an incubating API .
The very same week we signed our first ever angel investor for Plastic SCM, in early summer of 2005, Linus Torvalds announced Git. I had spent more than a year pitching investors to build a new version control, and suddenly the creator of Linux was building one himself. That week I understood the road ahead was going…
Synchronization barriers let you test for race conditions with confidence.
New mailers, i18n, and Minitest. Your apps faster by default. Our most complete Hanami yet!
A modular, compile-checked tutorial for learning category-theory ideas through a tiny Rust ML pipeline.
How I developed a Klondike Solitaire game for curses in C language as an entry for the IOCCC.
Nineteen distribution channels later: what it actually costs to give a terminal editor away for free on Linux, and why the next step is a static musl binary that updates itself.
In which I revisit one of my favorite bugs, the invalid surrogate pair.
Learn how pull request limits can help manage contribution volume in your repositories, and see what’s next on the roadmap.
Actually building floating point from scratch!
A while ago I wrote a small file watcher in Go for my own use with an accompanying blog post . I needed a tool that I could just plop in front of the command I was running as part of my iteration loop. I use it for recompiling C files when I modify them,
We've launched an experimental Rust library for Tailscale via tsnet. Help test tailscale-rs and shape it with your feedback.
What the **** does that mean?
Extracting my gym’s QR check-in from its Flutter app, with a rooted phone and a lot of ripgrep.
We develop fast Rust crates and release them fast.
Rune 1.1 makes Rune free for personal use and adds a perpetual commercial license, a workspace symbol index, first-class Python support, an Emacs editor, and substantial improvements to SSH workspaces.
