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Evan Hahn's blog

Mostly about programming.

notes from january 2026

an llm that's 7500× stupider

a mental math heuristic to convert between fahrenheit and celsius

i set all 376 vim options and i'm still a fool

notes from "on writing well"

notes from december 2025

prediction: mastodon will outlive bluesky

notes from "bad company: private equity and the death of the american dream"

how i implemented relative imports with pyodide

i made a little audio speed calculator

notes from november 2025

draft: stopping bad guys from using my open source project (feedback wanted)

notes from "the story of the typewriter"

experiment: making typescript immutable-by-default

fizz buzz without conditionals or booleans

"understanding unicode": my october 2025 talk at longhorn php

kirby air riders demo impressions (from a big fan of the original)

notes from "tor: from the dark web to the future of privacy"

notes from october 2025

scripts i wrote that i use all the time

notes from september 2025

people read your blog in many different ways

@ts-ignore is almost always the worst option

js fetch converts string request bodies to utf-8

notes from august 2025

notes from july 2025

notes from "the weather machine: a journey inside the forecast"

notes from "where wizards stay up late: the origins of the internet"

local llms versus offline wikipedia

simple macos script to extract text from images (ocr)

how i build software quickly

notes from june 2025

notes from "empire of ai: dreams and nightmares in sam altman's openai"

an unfinished post: "compressing short unicode strings with bocu-1"

getting over my grudge against the periodic table

rainbow "code doodle"