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Stop Advertising in Your Commits
Co-authored-by: ur mom
Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 1,421 posts.
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How to choose colors for your CLI applications (2023)
Let’s say you’re creating a CLI tool which has to display syntax highlighted source code. You begin by choosing some colors which look nice with your chosen terminal theme:
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Agent memory as a file format
Memoryfields - a vastly simpler way to do agent memory
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Use the Mikado Method to do safe changes in a complex codebase
When a codebase is large and complex, it's risky to big changes. Here's a structured way to approach
755
How well do agents use test/verification techniques?
We previously noted that, while it's easier than ever to hit a particular quality bar by having coding agents use effective test techniques, software quality seems to be getting worse , indicating that whatever defaults developers are using may not work very well. Here, we test if simple instructions to agents to use…
756
Emacs Bedrock 2.0
Bedrock is a minimal, human-crafted starter-kit for Emacs, and today I’m pleased to announce that version 2.0 of Bedrock is available! This release requires Emacs 31, which came out in August 2026. If you are unable to upgrade Emacs that high, you should be able to remove some of the Emacs 31-specific config without…
757
Python's pre-declared constants are kinda weird
python has 6 pre-declared "constants": True , False , None , __debug__ , Ellipsis (or equivalently ... ), and NotImplemented . but they all behave slightly differently, for some reason.
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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…
759
Unearthing my 1996 windowed OS in machine code for Am29000 homebrew computer
History of the development of my windowed operating system for 32-bit Am29000 processors when I was age 18.
760
I made Zig compute 33M satellite positions in 3 seconds
Update: I've since added multithreading and pushed astroz to 326M propagations/sec. Read the follow-up → I've spent the past month optimizing SGP4 propagat...
761
What it means that Ubuntu is using Rust
Righty-ho, I’m back from Rust Nation, and busily horrifying my teenage daughter with my (admittedly atrocious) attempts at doing an English accent 1 . It was a great trip with a lot of good conversations and some interesting observations. I am going to try to blog about some of them, starting with some thoughts…
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Java sealed classes and exhaustive pattern matching
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…
763
Ape Coding [fiction]
Ape coding is the software development practice where a human developer deliberately hand-writes source code.
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Parallel coding agents with tmux and Markdown specs
A practical workflow for running 4–8 parallel coding agents using Claude Code, tmux, and a Markdown-based feature design system.
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Stripe's Knowledge AI Platform
Stripe's Knowledge AI Platform is our versatile AI agent platform built to handle diverse non-coding knowledge work, from quick queries to complex, multi-day projects. By connecting employees to over 1,000 internal tools and skills, it enables secure, enterprise-scale productivity across the organization.
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hdiutil is deprecated in macOS 27 Golden Gate
The macOS command-line tool hdiutil is used to manipulate disk images. From the WHAT'S NEW section of man hdiutil on the latest macOS 27 Golden Gate beta:
767
The Zen of Parallel Programming
As I continue reading An Introduction to Parallel Programming, I cannot help but notice a connection between communication among processors, communication among human beings, and communication within the individual self....
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Towards trust in Emacs
A post by Eshel Yaron introducing the Emacs Trust Manager
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Corners Don't Look Like That: Regarding Screenspace Ambient Occlusion (2012)
Please, feel free to gather better data yourself and prove me wrong. If you do so I'll link to it!
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.gitignore Everything by Default
An opposite view on .gitignore files.
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A Terminal Protocol for Program Status (OSC 7501)
I wrote a specification for a new terminal escape sequence: OSC 7501, the Program Status Protocol . It lets any program tell the terminal what it's doing: idle, working, waiting on the user, finished, or failed, and why.
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Programmers will document for Claude, but not for each other
From the highly eclectic blog of Mark Dominus
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Dependency cooldowns turn you into a free-rider
Against dependency cooldowns as a response to supply chain attacks
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I built a 2x faster lexer, then discovered I/O was the real bottleneck
Archiving 104K files into tar.gz reduced I/O time by 43x and total processing time by 2.3x. The bottleneck was not disk speed, it was syscall overhead.
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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.
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Tracing HTTP Requests with Go's net/HTTP/httptrace
net/http/httptrace has been in the standard library since Go 1.7 and most Go developers I talk to have never used it. It exposes hooks for the points in an outgoing HTTP request that you usually cannot see from outside the transport: DNS resolution, connection acquisition, TLS handshake, the moment bytes go on the…
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Lotus Notes and the dangers of starting from scratch
Lotus Notes had encryption, rich text, and read receipts before email did. Why it still failed, and the dangers of starting software from scratch.
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Nine coding harnesses vs. your laptop
Made in Notion, the connected workspace where AI agents and teams organize docs, projects and knowledge together.
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Bun v1.3.9
Fixes 23 issues (addressing 13 👍). Run multiple scripts in --parallel or --sequential. bun:test mock & spyOn get Symbol.dispose support. ESM bytecode compilation. Faster Bun.markdown. Faster RegExp, String.prototype.trim, String.prototype.startsWith.
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UUIDv7: Timestamps aren’t time-ordered and other oddities
When timestamps aren’t time-ordered and other oddities