The latest blog posts to take off on Hacker News. 21,812 posts.
Bend just serves as a useful example of my general point regarding vibe-coding as it is recent, high-profile, and has aspects that make it easy to use as an example. I don’t know anything about the author’s history with designing languages or if they actually did consider the tradeoffs below and made what I think is a…
The rare moment when I need to open a powerpoint document is here. As usual, I have my institutional account logged into their “services”, because my university pays microslop something in the ballpark of hundreds of thousands of euros in contracts with this large software provider.
Let’s start with a question! Is this program well-defined? 1 2 3 4 int main() { while (true) ; } If you said yes, you’d be wrong — at least before C++26. A while (true); loop with no side effects used to be undefined behaviour. Compilers were free to assume it terminates, and some — Clang in particular — would…
We're post-tokenmaxxing. What are we pre-? How do we get there?
My personal website, portfolio, and blog.
A deep dive into the DeepSeek-V4.1 Flash technical report: CED, CSA2, HSI, Single-Pass mHC, Engram and FP4 KV Cache — how the KV cache was compressed to just 890 bytes per token.
Rust LSP that doesn't eat memory for breakfast
Git packfiles were designed for mmap and local disk, so pulling one object out of a bucket means guessing at a byte range. I wrote a new format instead.
A lot of effective engineering comes from the accumulation of small nuggets of knowledge.
From the Zed Blog: Delta is now in public beta. Replacing pull requests is our first step toward replacing GitHub.
A write-up of a full shader debugging session to find out why my Voronoi Diagram shader was stuttering in one specific machine.
In September 2026, NVIDIA announced it is leaning into native GPU programming in Rust. CUDA C++ and CUDA Python are mature, enterprise-grade toolchains, and NVIDIA will be growing and maturing CUDA…
Open answers to a reader's letter.
In 2014 I wrote http_build_url, a temporary PHP polyfill for AOL's CMS. Twelve years and nearly 20 million installs later, I'm deprecating it.
Take a tour through hundreds of performance improvements in .NET 11.
Run a cheap model on every PR and escalate to a stronger one: on 50 PRs it found 120 verified bugs for $4.13 versus 108 for GPT-5.6 Sol alone.
Apple’s latest software updates introduce Siri AI and deliver helpful new Apple Intelligence features.
How the Verus "program verifier", which automatically checks code against a mathematical specification of its functionality, helps increase security assurance in software projects.
A microscope for Tokio and Rust applications
Best practices for writing a design doc based on my experience working as a developer at Google and Microsoft.
Today Reuters and the Wall Street Journal both reported about rogue AI agents at OpenAI attacking RubyGems.org. https://www.rubyhack.ai/ has an amazing writeup, and you should read it. I just wanted to make a quick post about it because it’s wild. TL;DR: It seems like OpenAI Bots knew about the RubyGems caching…
It came after ud0 and ud1.
Real-SWE benchmarks frontier AI models on private production codebases licensed from real companies. Eighteen models across twenty-five tasks.
This post details how Factorio's random number generation works, how it can be reversed and how I used that knowledge to predict and manipulate the RNG with pure in‑game mechanics.
I recently saw an interesting YouTube video by “Physics for the Birds”. The main video is about matrixes, but he used flags to explain some of the operations on matrixes:
I built buildprof (Github), an open-source tracing tool that shows where the time goes when you compile software on Linux. Here’s a realtime video of it profiling a clean build of ripgrep: Watch the …
Pandas has taken us a long way, but it's time for a new bear
Rune is now open source under the GPLv3. A native, keyboard-driven IDE written primarily in Go is ready for Go developers to inspect, change, and help build.
Exploring how to measure code sloppiness, why correct code can still erode a codebase, and why human intuition and taste still matter.
