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.
2025-06-18
You can use `fzf` to review git commits
jvns.ca/til/fzf-preview-git-commitsI just learned that
you can use it to review a git commit like this and I thought that was really
cool.
2025-05-23
Async from scratch 1: What's in a Future, anyway? | natkr's ramblings
natkr.com/2025-04-10-async-from-scratch-1There are a lot of guides about how to use async Rust from a "user's
perspective", but I think it's also worth understanding how it
works, what those async blocks actually mean.
honk
humungus.tedunangst.com/r/honk
Take control of your honks and join the federation.
An ActivityPub server with minimal setup and support costs.
Spend more time using the software and less time operating it.
2025-03-21
Life Altering Postgresql Patterns
mccue.dev/pages/3-11-25-life-altering-postgresql-patterns2025-01-09
if got, want: A Simple Way to Write Better Go Tests
mtlynch.io/if-got-want-improve-go-tests2024-12-20
Visitor Pattern Considered Pointless - Use Pattern Switches Instead
nipafx.dev/java-visitor-pattern-pointlessIn 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.
2024-10-24
Rust Prism
registerspill.thorstenball.com/p/rust-prism2024-10-21
init.py files are optional. Here’s why you should still use them
dev.arie.bovenberg.net/blog/still-use-init-py2024-10-16
Damas-Hindley-Milner inference two ways
bernsteinbear.com/blog/type-inference2024-09-30
On Leaving Apple
typesanitizer.com/blog/leaving-apple.html2024-09-16
Wayland: i3 to Sway migration
anarc.at/software/desktop/wayland2024-09-10
run freebsd in qemu on linux
sethops1.net/post/run-freebsd-in-qemu-on-linux2024-08-15
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.htmlA lightning post on logic programming in Haskell to construct a workout weekly schedule given the set of exercises, days and constraints.
2024-06-26
You probably wrote half a monad by accident
gieseanw.wordpress.com/2024/06/25/you-probably-wrote-half-a-monad-by-accident2024-06-24
Counting Immutable Beans: Reference Counting Optimized for Purely Functional Programming
arxiv.org/abs/1908.05647Most functional languages rely on some garbage collection for automatic memory management. They usually eschew reference counting in favor of a tracing garbage collector, which has less bookkeeping overhead at runtime. On the other hand, having an exact reference count of each value can enable optimizations, such as destructive updates. We explore these optimization opportunities in the context of an eager, purely functional programming language. We propose a new mechanism for efficiently reclaiming memory used by nonshared values, reducing stress on the global memory allocator. We describe an approach for minimizing the number of reference counts updates using borrowed references and a heuristic for automatically inferring borrow annotations. We implemented all these techniques in a new compiler for an eager and purely functional programming language with support for multi-threading. Our preliminary experimental results demonstrate our approach is competitive and often outperforms state-of-the-art compilers.
2024-06-14
litterbox - IRC logger
git.causal.agency/litterbox/about2024-06-13
Arena allocator tips and tricks
nullprogram.com/blog/2023/09/272024-06-10
On Dependency Usage in Rust
landaire.net/on-dependency-usage-in-rustRust and Node aren't bad for encouraging dependency use -- your favorite language's tools just suck.