2025-09-01
Jujutsu for everyone
jj-for-everyone.github.ioA Jujutsu tutorial that requires no previous experience with Git or other version control systems.
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.
2024-12-17
GBA From Scratch With Ferris
lokathor.github.io/gba-from-scratch2024-09-25
in which interactive development saves the day
technomancy.us/1892024-09-18
Typescript is surprisingly ok for compilers
matklad.github.io/2023/08/17/typescript-is-surprisingly-ok-for-compilers.html2024-09-15
Writing an OS in Rust
os.phil-opp.comThis blog series creates a small operating system in the Rust programming language. Each post is a small tutorial and includes all needed code.
2024-09-10
run freebsd in qemu on linux
sethops1.net/post/run-freebsd-in-qemu-on-linux2024-09-02
Parsing awk is tricky
www.raygard.net/awkdoc/pages/awk_parsing_is_tricky.htmlA somewhat compact implementation of the awk programming language
2024-08-15
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.
2024-06-20
Why does SQLite (in production) have such a bad rep?
avi.im/blag/2024/sqlite-bad-rep2024-06-18
Comparing Objective Caml and Standard ML
adam.chlipala.net/mlcomp2024-06-14
CAUSAL.AGENCY(7)
causal.agencyI 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
Category Theory for Programmers: The Preface
bartoszmilewski.com/2014/10/28/category-theory-for-programmers-the-prefaceSolving SAT via Positive Supercompilation
hirrolot.github.io/posts/sat-supercompilation.htmlMacaroons Escalated Quickly
fly.io/blog/macaroons-escalated-quickly2024-06-12
My experience crafting an interpreter with Rust
ceronman.com/2021/07/22/my-experience-crafting-an-interpreter-with-rustLast year I finally decided to learn some Rust. The official book by Steve Klabnik and Carol Nichols is excellent, but even after reading it and working on some small code exercises, I felt that I …