20 random bookmarks

2025-09-29

135.

stupid jj tricks

andre.arko.net/2025/09/28/stupid-jj-tricks

Welcome to “stupid jj tricks”. Today, I’ll be taking you on a tour through many different jj configurations that I have collected while scouring the internet. Some of what I’ll show is original research or construction created by me personally, but a lot of these things are sourced from blog post, gists, GitHub issues, Reddit posts, Discord messages, and more.

2025-08-21

129.

A Brief Guide to A Few Algebraic Structures

argumatronic.com/posts/2019-06-21-algebra-cheatsheet.html

I started writing this post because, for whatever reason, I keep forgetting what the difference is between a ring and a group, which is funny to me because I never forget the difference between a semiring and a semigroup – although other people do, because it’s quite easy to forget! So, I wanted a fast reference to the kinds of algebraic structures that I am most often dealing with in one way or another, usually because I’m writing Haskell (which has some reliance on terminology and structure from abstract algebra and category theory) or I’m trying to read a book about category theory and they keep talking about “groups.” Wikipedia, of course, defines all these structures, and that’s fine, but what I need in those times is more of a refresher than an in-depth explanation.

2025-08-12

128.

missing.css

missing.style

2025-06-12

116.

Always do Extra

www.bennorthrop.com/Essays/2021/always-do-extra.php

Extra is different than More. Extra is finishing those two screens, but then researching a new library for form validation that might reduce the boilerplate code. Or it's learning ways to protect against common security vulnerabilities from data entry. These little off-ramps from the main highway of Normal Work could be dead-ends and not have any practical value to the project. But they might also be important contributions. And that's the thing with Extra. While the tangible value to the project is uncertain (it could be nothing this time or it could be something), the value to you is real.

2025-05-06

107.

Debian installation with encrypted BTRFS

chaos.tomaskral.eu/guides/debian-encrypted-btrfs-root

2025-04-24

105.

Instrumenting Axum projects

determinate.systems/posts/instrumenting-axum

2025-03-21

103.

Life Altering Postgresql Patterns

mccue.dev/pages/3-11-25-life-altering-postgresql-patterns

2024-12-20

94.

Visitor Pattern Considered Pointless - Use Pattern Switches Instead

nipafx.dev/java-visitor-pattern-pointless

In modern Java, the visitor pattern is no longer needed. Using sealed types and switches with pattern matching achieves the same goals with less code and less complexity.

2024-10-16

83.

Damas-Hindley-Milner inference two ways

bernsteinbear.com/blog/type-inference

2024-09-16

73.

Technical Writing One introduction

developers.google.com/tech-writing/one

2024-08-28

69.

There can't be only one

www.b-list.org/weblog/2024/aug/27/highlander-problem

There's a concept that I've heard called by a lot of different names, but my favorite name for it is …

2024-08-18

68.

Permacomputing

permacomputing.net

Permacomputing is both a concept and a community of practice oriented around issues of resilience and regenerativity in computer and network technology inspired by permaculture.

2024-08-15

67.

Writing a C Compiler

nostarch.com/writing-c-compiler

A fun, hands-on guide to writing your own compiler for a real-world programming language.

66.

Planning Weekly Workouts in 100 lines of Haskell

alt-romes.github.io/posts/2024-08-14-planning-a-workout-week-with-100-lines-of-haskell.html

A lightning post on logic programming in Haskell to construct a workout weekly schedule given the set of exercises, days and constraints.

2024-07-09

61.

Using use in Gleam

erikarow.land/notes/using-use-gleam

2024-07-03

59.

Announcing wcurl: a curl wrapper to download files

samueloph.dev/blog/announcing-wcurl-a-curl-wrapper-to-download-files

2024-06-20

48.

build2 | C/C++ Build Toolchain

build2.org

build2 is an open source (MIT), cross-platform build toolchain that aims to approximate Rust Cargo's convenience for developing and packaging C/C++ projects while providing more depth and flexibility, especially in the build system.

2024-06-19

44.

Aurora - Python Static Site Generator

aurora.jamesg.blog

Aurora: An extensible, Python-based static site generator.

2024-06-14

31.

CAUSAL.AGENCY(7)

causal.agency

I make mostly IRC software in C. I like OpenBSD but also the GPL. I just want to read books and try to learn to be kinder. When I can I'd like to talk to strangers and experience more magic.

2024-06-13

23.

Macaroons Escalated Quickly

fly.io/blog/macaroons-escalated-quickly