1081
Stealing from Biologists to Compile Haskell Faster
The trick that makes GHC’s ApplicativeDo optimization faster is structurally identical to how biologists predict RNA folding.
Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 1,421 posts.
1082
I built a programming language using Claude Code
Over the course of four weeks in January and February, I built a new programming language using Claude Code. I named it Cutlet after my cat. It’s completely legal to do that. You can find the source code on GitHub , along with build instructions and example programs .
1083
If I could make my own GitHub
My friend and I have a game where we talk about what we'd do if we were rich. Not rich like 'paid off the mortgage' rich. Rich like a man who owns a submarine he's never been inside. Rich like a man whose third wife has a skincare
1084
Your C is not standard C
this is an incomplete list of some incompatibilities between c as it's written in the standard and c as it exists in the real world for people who use gcc/clang + glibc/musl.
1085
Angular v22
Today, we are thrilled to announce the release of Angular v22. We continue to be proud of the work we do with each release. Our goal is to…
1086
Agent-to-agent pair programming
What if you could let Claude and Codex work together as pair programmers, talking to each other directly? One of them as the main worker and the other as a reviewer.
1087
SIMD for Collision
In a previous post SIMD Matters I discussed the big wins I got from graph coloring to make the contact solver faster. That same approach exists in Box3D. I like to call this approach “wide SIMD”. The idea is to process multiple work units at the same time. In the contact solver this means solving four contact points…
1088
z386: An Open-Source 80386 Built Around Original Microcode
This is the fifth installment of the 80386 series . The FPGA CPU is now far enough along to run real software, and this post is about how it works. z386 is a 386-class CPU built around the original Intel microcode, in the same spirit as z8086 .
1089
Reading and writing are less symmetric than you (probably) think
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…
1090
Static Allocation, Constant Work
In reply to this email:
1091
Retrofitting JIT Compilers into C Interpreters
C interpreters are a common language implementation technique and the basis for the reference implementations of languages such as Lua, Ruby, and Python. Unfortunately, C interpreters are slow, especially compared to language implementations powered by JIT compilers. In this post I’m going to show that it is possible…
1092
Memory safety absolutists
When seeing the title of this post, I bet in some people's minds, the first thought was "Rust devs!". This connection is not unfounded. Rust devs tend to be passionate about memory safety. Some of it, I'm sure, may have been caused by a classic language wars attitude: my language is better than yours, and here is why…
1093
PHP's Oddities
flow2 | Blog post: 'PHP's Oddities' in Tech
1094
Escape IntelliJ: Scala and Kotlin LSPs on Emacs Eglot
Enjoy Emacs and its built-in language server (LSP) superpowers, for JVM languages. Let's walk through basic language setups, specialized workspace configuration handling, and dive deep into some advanced JSON-RPC and advice-based workarounds for Scala (Metals) and Kotlin that make development truly seamless from Emacs…
1095
What I love about Django
The best parts of Django are the ones you stop noticing — a tour of the abstractions that have given Buttondown the most leverage over the years.
1096
All your agents are going async
Agents used to be a thing you talked to synchronously. Now they’re a thing that runs in the background while you work. When you make that change, the …
1097
Qualcomm Linux 2.0
Unified code base. Upstream first. No fork. SoC agnostic. Learn how you can build with Qualcomm Linux 2.0
1098
Tapo (Rust/Python library) now speaks TP-Link's TPAP protocol
tapo now logs in over the TPAP protocol, so the Third-Party Compatibility switch in the Tapo app can stay off. Also new: H200 and H500 camera hubs with recording downloads, and plug schedules and timers.
1099
Linuxulator on FreeBSD Feels Like Magic
Most linux software just work on FreeBSD
1100
Optimizing Ruby Path Methods
Back in November last year, I started a new job at Intercom, and one of the first projects I got to work on was improving the Intercom monolith CI with some of my new colleagues.
1101
Disable Your SSH access accidentally with scp
Here's an interesting bug I ran into recently: After transferring some files to my server via scp, I couldn't log in via SSH anymore - my key was rejected by sshd.
1102
C vs. C#: racing VLC's Gaussian blur
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.
1103
Why we write our own C and C++ inference engines
LocalAI is the open source AI engine. Run any model, LLMs, vision, voice, image and video, on any hardware. No GPU required.
1104
Building a web server in aarch64 assembly to give my life (a lack of) meaning
a static http server in aarch64 assembly
1105
How I reverse engineered a commercial spatial audio effect
Measuring a commercial spatial audio processor, extracting its stereo impulse responses, and rebuilding the effect as a convolution filter on Linux.
1106
What I did at Recurse Center
I spent the summer at Recurse Center, a programming retreat in Brooklyn, at the recommendation of my friend Cory. These are some things I did there.
1107
Building an Advanced Agentic Harness
From a single pilot to an air campaign: planning, parallelism, memory, verification, and observability for production-shaped agents.
1108
Whistler: Live eBPF Programming from the Common Lisp REPL
Writing, compiling, loading, and querying eBPF programs in one Lisp form.
1109
Build a Deep Learning Library
Instead of just learning how to use a deep learning library, we are going to learn how to create one.
1110
Crafting QR Codes: A deep dive into QR code art (2024)
An interactive explaination of how QR codes work and techniques for rendering artistic QR codes