20 random bookmarks

2025-10-24

137.

How to Run 1:1s as an Engineering Manager

justoffbyone.com

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.

2025-07-31

127.

A dive into open chat protocols

wiki.alopex.li/ADiveIntoOpenChat

2025-05-28

114.

SAT Live!

localhost:4000

2025-04-29

106.

No-engine gamedev using Odin + Raylib

zylinski.se/posts/no-engine-gamedev-using-odin-and-raylib

Games can be made in many different ways. Many games are made using big, general purpose game engines such as Unity and Godot. I enjoy using the Odin Programming Language combined with Raylib.
Odin is a C-like programming language and Raylib is library for drawing graphics, checking input and playing sounds. So it’s just a program that uses a simple library, no engine!
There are no objectively best ways to create games.

2024-12-17

93.

GBA From Scratch With Ferris

lokathor.github.io/gba-from-scratch

2024-10-04

80.

Snappy UI Optimization with useDeferredValue

www.joshwcomeau.com/react/use-deferred-value

useDeferredValue is one of the most underrated React hooks. It allows us to dramatically improve the performance of our applications in certain contexts. I recently used it to solve a gnarly performance problem on this blog, and in this tutorial, I'll show you how! ⚡

2024-07-15

62.

"GitHub" Is Starting to Feel Like Legacy Software

mistys-internet.website/blog/blog/2024/07/12/github-is-starting-to-feel-like-legacy-software

I’ve used a lot of tools over the years, which means I’ve seen a lot of tools hit a plateau. That’s not always a problem; sometimes …

2024-07-03

59.

Announcing wcurl: a curl wrapper to download files

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

2024-06-26

53.

A reckless introduction to Hindley-Milner type inference

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

2024-06-24

51.

Deriving Dependently-Typed OOP from First Principles -- Extended Version with Additional Appendices

arxiv.org/abs/2403.06707

The expression problem describes how most types can easily be extended with new ways to produce the type or new ways to consume the type, but not both. When abstract syntax trees are defined as an algebraic data type, for example, they can easily be extended with new consumers, such as print or eval, but adding a new constructor requires the modification of all existing pattern matches. The expression problem is one way to elucidate the difference between functional or data-oriented programs (easily extendable by new consumers) and object-oriented programs (easily extendable by new producers). This difference between programs which are extensible by new producers or new consumers also exists for dependently typed programming, but with one core difference: Dependently-typed programming almost exclusively follows the functional programming model and not the object-oriented model, which leaves an interesting space in the programming language landscape unexplored. In this paper, we explore the field of dependently-typed object-oriented programming by deriving it from first principles using the principle of duality. That is, we do not extend an existing object-oriented formalism with dependent types in an ad-hoc fashion, but instead start from a familiar data-oriented language and derive its dual fragment by the systematic use of defunctionalization and refunctionalization. Our central contribution is a dependently typed calculus which contains two dual language fragments. We provide type- and semantics-preserving transformations between these two language fragments: defunctionalization and refunctionalization. We have implemented this language and these transformations and use this implementation to explain the various ways in which constructions in dependently typed programming can be explained as special instances of the phenomenon of duality.

50.

Microfeatures I Love in Blogs and Personal Websites

danilafe.com/blog/blog_microfeatures

In this post, I talk about pleasant but seemingly minor features in personal sites

2024-06-20

47.

Go's 'range over function' iterators and avoiding iteration errors

utcc.utoronto.ca/~cks/space/blog/programming/GoIteratorsAndAvoidingMistakes

2024-06-18

40.

Understanding SPF, DKIM, and DMARC: A Simple Guide

github.com/nicanorflavier/spf-dkim-dmarc-simplified
38.

Linux 6.10 Honors One Last ReiserFS Request Made By Hans Reiser - Phoronix

www.phoronix.com/news/ReiserFS-README-Linux-6.10

2024-06-13

23.

Macaroons Escalated Quickly

fly.io/blog/macaroons-escalated-quickly

2024-06-12

12.

I really like the RP2040

dgroshev.com/blog/rp2040

2024-06-11

10.

Self-serve dashboards

briefer.cloud/blog/posts/self-serve-bi-myth

Sales pitches are the only place where “self-serve dashboards" work. In the real world, it's a different story.

Why "business" people don't use metabase/power-bi.

7.

NetBSD 10 on a Pinebook Pro laptop

www.idatum.net/netbsd-10-on-a-pinebook-pro-laptop.html

I've been running NetBSD on a RockPro64 since NetBSD 10-BETA, and I'm still happy with it now with NetBSD 10-RELEASE. I'm always looking for hardware to hack NetBSD though, and I recently watched a FOSDEM 2024 video: NetBSD 10: Thirty years, still going strong!. The Pinebook Pro laptop was mentioned at one point, which has the same RockChip SoC as the RockPro64. That reminded me I'd been wanting to give this inexpensive ARM 64 laptop a try.