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“Expect tests” make test-writing feel like a REPL session
At Jane Street we use a pattern/library called “expect tests” that makes test-writing feel like a REPL session, or like exploratory programming in a Jupyter ...
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My favorite coding question to give candidates
A coding question, from the viewpoint of an Google/Amazon/Microsoft interviewer
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Can sanitizers find the two bugs I wrote in C++?
A few days ago I published a short post about two bugs I wrote while developing the C++ external scanner for my TLA⁺ tree-sitter grammar. Reactions were mixed! Many people were supportive, but there were of course the usual drive-by claims by developers that the bugs were trivial, they would’ve found & fixed them…
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Why Static Languages Suffer from Complexity (2022)
People in the programming language design community strive to make their languages more expressive, with a strong type system, mainly to increase ergonomics by avoiding code duplication in final software; however, the more expressive their languages become, the more abruptly duplication penetrates the language itself.
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Code Is Not Technical Debt
Someone is wrong on the Internet; he said that all code is technical debt, and I refute that.
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How SerenityOS declares ssize_t
This post explores one of my favorite hacks in SerenityOS. I don’t recommend doing this in your codebase, but it has worked for us so far. :^)
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Spotting and avoiding heap fragmentation in Rust applications
One of our Rust services started to show an odd memory profile. This is the story of how we investigated the issue.
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Fuzzy Finding with Emacs Instead of Fzf
fzf is a popular tool among command line hackers. But if you're an Emacs user, it's hard to use as it requires an interactive terminal. What if you could use Emacs to do the fuzzy finding instead of fzf?
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INTERCAL: Practically impossible
A very good friend of mine has been experimenting with trying to coax Chat-GPT4 to successfully do basic coding tasks. So have a lot of people these days, of course. In an idle moment, though, my friend submitted the following query:
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Understanding the power of bitwise operators
When learning a new programming language, there is usually a table in the documentation that shows the various operators that can be used with numbers.
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Tree-Structured Concurrency
For a while now I've been trying to find a good way to explain what structured concurrency is, and how it applies to Rust. I've come up with zingers such as: "Structured concurrency is structured programming as applied to concurrent control-flow primitives" . But that requires me to start explaining what structured…
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Kobold, a new web UI crate with zero-cost static DOM
The TodoMVC implemented in Kobold weighs about 30kb when gzipped over the wire, out of which the gzipped Wasm blob is under 20kb. There are no tricks there . I haven't replaced the default allocator, nor have I minified the JavaScript (although I probably should).
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ChromeOS is Linux with Google’s desktop environment
Between the Material You design and move to break apart the Chrome browser from ChromeOS, now more than ever, ChromeOS is Linux with Google's desktop environment.
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Programming AIs worry me
For some inane reason, Github classifies me as a "major open source maintainer", which means I get a free copilot subscription.1 I've been using it for a...
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Pitfalls of Helm – Insights from 3 years with the leading K8s package manager
Having worked with Helm for multiple years these 5 shortcomings always bugged my mind. From CRDs updates to multi namespace deployments.
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New plans for self-hosted Zulip customers
Update: We have published a new blog post describing an additional Zulip plan for self-hosting without commercial support. Zulip is a 100% open-source team chat application designed for efficient communication. Zulip is available as a cloud service or a self-hosted solution. Organizations that self-host …
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A single line of code brought down a half-billion euro rocket launch
And it was so avoidable! The bug was from a piece of dead code, left over from the previous Ariane 4 mission a decade before.
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Using Google’s code history to write more code
Posted by Petros Maniatis and Daniel Tarlow, Research Scientists, Google Software isn’t created in one dramatic step. It improves bit by bit, one l...
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Connecting a 1980s Pinball Machine to the Internet
I built a device that allows a pinball machine from 1984 to automatically upload scores to the internet. The device taps into the machine’s memory bus and monitors the game state, uploading scores after each game.
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Pydantic V2 rewritten in Rust is 5-50x faster than Pydantic V1
What’s new in Pydantic v2: 5-50x faster than Pydantic v1 and with substantial architecture improvements for enhanced safety & maintainability
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Zink brings conformant OpenGL on Imagination GPUs
Today, Imagination Technologies announced some very exciting news: they are now using Zink for full OpenGL 4.6 support!
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PyPI has completed its first security audit
We are proud to announce PyPI's first external security audit.
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Dolphin Emulator Progress Report: August, September, and October 2023
This past October, Dolphin turned 20 years old since its initial release to the public as an experimental GameCube emulator. It's been a long ride, with twists and turns. I don't know if anyone back in 2003 expected Dolphin not only to still be under active development 20 years later, but to also support the…
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I think I kind of hate lazy loading
Yesterday I was on a train. I clicked on a link and my browser loaded a long article for me to read. Halfway through reading it, the train went into a tunnel and I lost signal. That meant I couldn't see the images on the other half of the page for the rest of the journey. I had a sea of broken images. Even though the…
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Extism makes WebAssembly easy
An exploration of how Extism makes it easy to use WebAssembly
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