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A mathematical problem(opens in new tab)

While reading some classic poetry, I accidentally found Samuel Taylor Coleridge’s A Mathematical Problem: On a given finite line Which must no way incline; To describe an equi– –lateral Tri– –A, N, G, L, E. I have to admit, the ...

Inverted themes with light-dark()(opens in new tab)

We rolled out adaptive light-dark() support on our design system themes and it’s been a delightful upgrade. Creating light and dark variable sets isn’t difficult, but delivery has trade-offs. Most apps that do this probably ship both sets of token ...

#476: Common themes(opens in new tab)

Topics covered in this episode: Migrating from mypy to ty: Lessons from FastAPI Oxyde ORM Typeshedded CPython docs Raw+DC Database Pattern: A Retrospective Extras Joke See the full show notes for this episode on the website at pythonbytes.fm/476

Ozempic dreams(opens in new tab)

It’s a secret to everyone! This post is for RSS subscribers only. Read more about RSS Club. I’ve heard the term “Ozempic face” for awhile. People have opinions about that one, but I tend to feel like we should be ...

Value numbering(opens in new tab)

Welcome back to compiler land. Today we’re going to talk about value numbering, which is like SSA, but more. Static single assignment (SSA) gives names to values: every expression has a name, and each name corresponds to exactly one expression. ...

2026.Q1 Review(opens in new tab)

TL;DR - In 2026.Q1 I participated in a 12-week programming retreat, published my 1,000th blog post, started building with Rust, solidified my agentic engineering workflows, shipped my first game, star...

Hello Again, World(opens in new tab)

On December 24, 1968, Christmas Eve, astronaut William Anders took what would become one of the most consequential photographs in human history. He was aboard Apollo 8, orbiting the Moon for the fourth time, when the spacecraft rotated and the ...

#475: Haunted warehouses(opens in new tab)

Topics covered in this episode: Lock the Ghost Fence for Sandboxing MALUS: Liberate Open Source Harden your GitHub Actions Workflows with zizmor, dependency pinning, and dependency cooldowns Extras Joke See the full show notes for this episode on the website ...

Using Perfetto in ZJIT(opens in new tab)

Originally published on Rails At Scale. Look! A trace of slow events in a benchmark! Hover over the image to see it get bigger. img { max-width: 100%; } img:hover { transform: scale(2); transition: transform 0.1s ease-in; } img:not(:hover) { ...

Prompting(opens in new tab)

I’ve noticed lately that more people are writing forum postings and Reddit questions as if they were writing a prompt for an LLM. Here’s an example from a Buddhist forum I lurk on: