The latest blog posts to take off on Hacker News. 14,535 posts.
Fuzz testing is incredibly effective for mechanically discovering software defects, yet remains underused and neglected. Pick any program that must gracefully accept complex input, written in any language , which has not yet been been fuzzed, and fuzz testing usually reveals at least one bug. At least one program…
I am talking about the I/O operations as used in computing here. A typical example of how this kind of thing is exposed are the POSIX syscalls read(2) and write(2), which have the following C funct…
It has been about four months since I returned to Zig after being absent for a few years. In this time, I have written some software in Zig and reengaged with the community, online and in person. I decided to share some of that experience, including what I have liked about Zig so far and what I haven't. I'll include…
The missing chapter of Hacker's Delight
This is shorter than some of my other posts, but I keep seeing people doing this wrong. It's even worse now in the LLM era.
I have come to suspect that to most people thinking is painful. Some of us are addicted to thinking. Some of us find it a necessity. Johnny ...
Over 11 hours of coding videos on evaluation, inference-time scaling, reinforcement learning, and distillation, with Python and PyTorch.
An accelerated FAST feature detector for the ESP32-S3 leveraging 128-bit SIMD instructions, achieving ~2x the performance of the reference implementation.
Java classes become CLOS classes, seven JVM languages share one Lisp expression, and a saved Spring Boot application launches in 84 milliseconds.
Since early this year, Michael Malis (of pgrust ) has been showing me interesting things he's done and saying
My Implementing a Forth article got some great feedback, particularly around the subject of tiny Forth implementations. (And it was an excuse to list some of the tiniest Forths I’ve seen.)
How a 2001 business sim rendered its rich and detailed cities.
In Why Lean is Faster Than Rust , the author shares an impressive result: a DEFLATE compression library written in Lean 4 , a functional programming language and proof assistant, outperforming an equivalent Rust package that crates.io says has been downloaded over a billion times. From the article:
When timestamps aren’t time-ordered and other oddities
Growing procedural trees through competition for light: buds, resource allocation, shoot direction, and branch shedding.
I decided to make my own container runtime for fun, and even though I’m still early on, I’ve learned that Docker is weird . Here’s some weird things I learned about Docker.
We published the triangulator of our map engine as earstrip, an ISC-licensed C++ and WebAssembly library. How it came to be: the ear clipper rebuilt one idea at a time and timed on 3.7 million polygons of real map data.
A 360M model that pretends to be a terminal, and remembers what you did
In 1954, IBM said FORTRAN would virtually eliminate coding and debugging. What the numbers say about AI and software work in 2026, and my guess at a developer's Tuesday in 2031.
A real VLC video filter, ported line by line to C# and raced against the original C inside VLC 4, then optimized on both sides, with byte-identical output throughout.
LLM-based agents can do a lot of tasks. Or, at least, they can appear to do them. For example, they write code, summarize papers, plan trips, and fill in forms. If you ask one for a probability or a confidence score, it will give you one of those too. I have seen many agent designers use LLMs to generate confidence…
Matyáš Racek's blog
Something funny happened a little while ago: I read about FreshRSS, and it sounded nice, so I installed it on a server and started using it . That would not have happened a year ago, but then again, a year ago I didn’t have any NixOS servers.
Many readers will be aware that an unusually high number of features have been reverted from the PostgreSQL 19 branch after the beta period began. Having some reverts is not unusual, maybe one per cycle could be expected. But this time around, about 8 to 10 significant features, depending on how you count, have been…
I’ve decided to archive the source code of my Ruby gems to make it clear that I’m no longer working on them; I’ve written this post to link from them in order to explain why.
Artisans, factories and the new material software is made of
Why I built superlite, an autonomous build workflow for Claude Code that doesn't ask permission every four minutes: how it works, how to use it, and the benchmarks.
Why the last thing you should spend time on is your own software factory.
Java 17 introduced sealed classes, which allow you to explicitly list the allowed sub-types of an interface or base class. For example, here’s a toy example using a sealed interface and records (in…
