2025-09-29
stupid jj tricks
andre.arko.net/2025/09/28/stupid-jj-tricksWelcome 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
A Brief Guide to A Few Algebraic Structures
argumatronic.com/posts/2019-06-21-algebra-cheatsheet.htmlI 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.
2025-07-03
A Higgs-bugson in the Linux Kernel
blog.janestreet.com/a-higgs-bugson-in-the-linux-kernelWe recently ran across a strange higgs-bugson that manifested itself in a critical system that stores and distributes the firm’s trading activity data, called Gord. (A higgs-bugson is a bug that is reported in practice but difficult to reproduce, named for the Higgs boson, a particle which was theorized in the 1960s but only found in 2013.) In this post I’ll walk you through the process I took to debug it. I tried to write down relevant details as they came up, so see if you can guess what the bug is while reading along.
2025-06-26
Box combinators
mmapped.blog/posts/41-box-combinators.htmlIn functional programming,
combinator libraries refer to a design style that emphasizes bottom-up program construction.
Such libraries define a few core data types
and provide constructors—functions that create initial objects—and combinators—functions that build larger objects from smaller pieces.Combinators enable the programmer to use intuitive visual and spatial reasoning
that’s vastly more powerful than linear language processing.
As a result, solving problems with combinators feels like playing with lego pieces.
2025-06-13
What I talk about when I talk about IRs
bernsteinbear.com/blog/irsI have a lot of thoughts about the design of compiler intermediate representations (IRs). In this post I’m going to try and communicate some of those ideas and why I think they are important.
2025-05-30
The PGP Problem
www.latacora.com/blog/2019/07/16/the-pgp-problemWhy do people keep telling me to use PGP? The answer is that they shouldn’t be telling you that, because PGP is bad and needs to go away.
2025-05-28
The Ingredients of a Productive Monorepo
blog.swgillespie.me/posts/monorepo-ingredients2025-04-24
Instrumenting Axum projects
determinate.systems/posts/instrumenting-axum2025-03-21
Life Altering Postgresql Patterns
mccue.dev/pages/3-11-25-life-altering-postgresql-patterns2025-03-18
CASCII - ASCII Diagram Builder
cascii.appA well-equipped ASCII diagram builders freely available on the internet.
It stresses portability, simplicity, and immediateness.
2025-01-17
Earthstar
earthstar-project.orgStorage for private, distributed, offline-first applications. Earthstar is a specification and JavaScript library for building connected applications owned and run by their users.
2025-01-07
Write your own tiny programming system(s)!
d3s.mff.cuni.cz/teaching/nprg0772024-10-10
'Do' More With 'Run'
maxgreenwald.me/blog/do-more-with-runI recently wrote about Async Pool, one of my favorite JavaScript / TypeScript helpers, and today I want to share an even simpler yet extremely useful utility
2024-08-08
More than 200 orphaned Debian packages moved to git, 216 to go
www.hungry.com/~pere/blog/More_than_200_orphaned_Debian_packages_moved_to_git__216_to_go.html2024-06-20
Go's 'range over function' iterators and avoiding iteration errors
utcc.utoronto.ca/~cks/space/blog/programming/GoIteratorsAndAvoidingMistakes2024-06-17
Sqlc: 2024 check in — brandur.org
brandur.org/fragments/sqlc-20242024-06-14
litterbox - IRC logger
git.causal.agency/litterbox/about2024-06-13
Category Theory for Programmers: The Preface
bartoszmilewski.com/2014/10/28/category-theory-for-programmers-the-prefaceCategory Theory in Context
math.jhu.edu/~eriehl/context.pdf2024-06-09
Piku
piku.github.io/index.htmlpiku, inspired by dokku, allows you do git push deployments to your own servers, no matter how small they are.