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.

2025-09-23

134.

Cap'n Web: A new RPC system for browsers and web servers

blog.cloudflare.com/capnweb-javascript-rpc-library

Cap'n Web is a new open source, JavaScript-native RPC protocol for use in browsers and web servers. It provides the expressive power of Cap'n Proto, but with no schemas and no boilerplate.

2025-07-03

126.

A Higgs-bugson in the Linux Kernel

blog.janestreet.com/a-higgs-bugson-in-the-linux-kernel

We 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

121.

You can use `fzf` to review git commits

jvns.ca/til/fzf-preview-git-commits

I just learned that
you can use it to review a git commit like this and I thought that was really
cool.

2025-06-17

119.

Debugging tricks for IntelliJ

andreabergia.com/blog/2025/06/debugging-tricks-for-intellij

I have been using IntelliJ Idea at work for a decade or so by now, and it’s been a reliable companion. JetBrains IDEs have a bit of a reputation for being slow, but their feature set is incredible: powerful refactoring tools, a great VCS UI (though I like magit even more!), a huge number of supported frameworks, integration with just about any testing library for any language, code coverage tools, powerful debuggers, etc.

2025-05-15

108.

Writing that changed how I think about PL

bernsteinbear.com/blog/pl-writing

Every so often I come across a paper, blog post, or (occasionally) video that completely changes how I think about a topic in programming languages and compilers. For some of these posts, I can’t even remember how I thought about the idea before reading it—it was that impactful.

2025-04-04

104.

Pitfalls of Safe Rus

corrode.dev/blog/pitfalls-of-safe-rust

When people say Rust is a “safe language”, they often mean memory safety.
And while memory safety is a great start, it’s far from all it takes to build robust applications.
Memory safety is important but not sufficient for overall r…

2025-03-18

102.

CASCII - ASCII Diagram Builder

cascii.app

A well-equipped ASCII diagram builders freely available on the internet.
It stresses portability, simplicity, and immediateness.

2025-02-04

100.

Running a Debian Sid on Ubuntu

blogops.mixinet.net/posts/incus

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.

2024-11-22

89.

New stuff in Emacs 30

www.mgmarlow.com/words/2024-07-28-emacs-30-news

Reading through the Emacs 30 NEWS file and picking
out the stuff I think is the most interesting.

2024-09-10

71.

run freebsd in qemu on linux

sethops1.net/post/run-freebsd-in-qemu-on-linux

2024-06-26

53.

A reckless introduction to Hindley-Milner type inference

reasonableapproximation.net/2019/05/05/hindley-milner.html

2024-06-20

46.

Why does SQLite (in production) have such a bad rep?

avi.im/blag/2024/sqlite-bad-rep

2024-06-19

45.

Avoiding complexity with systemd

mgdm.net/weblog/systemd

Using systemd to avoid having to write some risky code

2024-06-14

Reposted 28.

interstar/cardigan-bay: A new wiki engine in Clojure ...

github.com/interstar/cardigan-bay

A single-user “wiki” engine powering the ThoughtStorms wiki.

2024-06-13

27.

Category Theory for Programmers: The Preface

bartoszmilewski.com/2014/10/28/category-theory-for-programmers-the-preface
19.

A simple, arena-backed, generic dynamic array for C

nullprogram.com/blog/2023/10/05
14.

Optimal SQLite settings for Django

gcollazo.com/optimal-sqlite-settings-for-django

There’s plenty of information out there on how to scale Django to handle numerous requests per second, but most of it…

2024-06-12

12.

I really like the RP2040

dgroshev.com/blog/rp2040