1021
Copilot edited an ad into my PR
After a team member summoned Copilot to correct a typo in a PR of mine, Copilot edited my PR description to include and ad for itself and Raycast .
New
The latest blog posts to take off on Hacker News. 1,422 posts.
1022
More on Version Control
This may have some legs
1023
Chess in SQL
What if I told you SQL could play chess? No JavaScript, no frameworks - just pure SQL rendering a full chess board in your browser.
1024
What category theory teaches us about dataframes
Every dataframe library ships with hundreds of operations. pandas alone has over 200 methods on a DataFrame. Is pivot different from melt? Is apply different from map? What about transform, agg, applymap, pipe? Some of these seem like the same operation wearing different hats. Others seem genuinely distinct. Without a…
1025
A Recipe for Steganogravy
how to hide juicy data in plain sight
1026
From 300KB to 69KB per Token: How LLM Architectures Solve the KV Cache Problem
How the KV cache gives every AI conversation a physical weight in silicon, and what happens when the memory runs out.
1027
TruffleRuby
TruffleRuby started as my internship project at Oracle Labs in early 2013. It is an implementation of the Ruby programming language on the JVM, using the Graal dynamic compiler and the Truffle AST interpreter framework . TruffleRuby can achieve peak performance well beyond that possible in JRuby at the same time as…
1028
Linux is an interpreter
And why you would want to exec a cpio
1029
I decompiled the White House's new app
The official White House Android app has a cookie/paywall bypass injector, tracks your GPS every 4.5 minutes, and loads JavaScript from some guy's GitHub Pages.
1030
Should QA exist?
There are a lot of challenges in the way QA and engineering work together. Many eng leaders think you shouldn't have QA. I dig in.
1031
Reinventing the pull request
We have significantly improved how code reviews work in Lubeno. We think code review should do more than catch bugs, it should also help teams reduce comprehension debt. In this post, I want to explain how that idea shaped our recent work on code review in Lubeno.
1032
1033
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.
1034
Building a Blog with Elixir and Phoenix
Setting up a website using Elixir and Phoenix, leaning on NimblePublisher for the blog posts.
1035
My minute-by-minute response to the LiteLLM malware attack
The full Claude Code transcript from discovering and responding to the litellm 1.82.8 PyPI supply chain attack on March 24, 2026 — from mysterious process explosions to malware identification to public disclosure.
1036
The RISE RISC-V Runners: free, native RISC-V CI on GitHub
Today, we are excited to announce the Early Availability of the RISE RISC-V Runners , a free, managed GitHub Actions runner service that gives any open source project access to real RISC-V hardware in their CI pipelines. No emulation, no cross-compilation hacks, no waitlist. Install a GitHub App, change one line in…
1037
Shell Tricks That Make Life Easier (and Save Your Sanity)
Watch someone backspace 40 characters instead of pressing CTRL+W, and you’ll understand why this list exists. A collection of shell tricks-grouped by what works everywhere and what’s Bash/Zsh-speci...
1038
Apple randomly closes bug reports unless you "verify" the bug remains unfixed
Why do I file bug reports with Apple Feedback Assistant ? I plead insanity. Or perhaps addiction. I seesaw between phases of abstinence and falling off the wagon. I’ve even tried organizing a public boycott of Feedback Assistant, with a list of demands to improve the experience for users, but the boycott never caught…
1039
1040
Why I forked httpx
I forked the python library httpx to httpxyz after over a year without a release of this popular package
1041
Go Naming Conventions: A Practical Guide
My new book guides you through the start-to-finish build of a real world web application in Go — covering topics like how to structure your code, manage dependencies, create dynamic database-driven pages, and how to authenticate and authorize users securely .
1042
Detecting file changes on macOS with kqueue
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,
1043
Improved Git Diffs with Delta, Fzf and a Little Shell Scripting
Spotting differences in code is an important part of what we do, Delta is by far the best CLI diff tool I ever used.
1044
Missile defense is NP-complete
Exploring the Weapon-Target Assignment problem: how missile defense connects to NP-completeness, SSPK probability calculations, and how saturation attacks exploit computational limits.
1045
Optimizing a lock-free ring buffer
A single-producer single-consumer (SPSC) queue is a great example of how far constraints can take a design. In this post, you will learn how to implement a ring …
1046
LLM Neuroanatomy II: Modern LLM Hacking and Hints of a Universal Language?
In Part 1, I described how duplicating a block of seven middle layers in Qwen2-72B — no weight changes, no training — produced the #1 model on the HuggingFace Open LLM Leaderboard. The method, which I called RYS (Repeat Your Self), was discovered using nothing but hard math probes and EQ-Bench on a pair of RTX 4090s.
1047
curl > /dev/sda: How I made a Linux distro that runs wget | dd
How I made a Linux distro that runs `wget | dd`
1048
From zero to a RAG system: successes and failures
A few months ago I was tasked with creating an internal tool for the company's engineers: a Chat that used a local LLM. Nothing extraordinary so far…
1049
Gzip decompression in 250 lines of Rust
i wanted to have a deeper grasp of how compression works, so i wrote a gzip decompressor from scratch. the result is about 250 lines of rust that can decompress gzip from a file or stdin.
1050
Whistler: Live eBPF Programming from the Common Lisp REPL
Writing, compiling, loading, and querying eBPF programs in one Lisp form.