20 random bookmarks

2025-10-17

136.

Automerge

automerge.org

Automerge is a local-first sync engine for multiplayer apps that works offline, prevents conflicts, and runs fast.

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.

2025-05-23

110.

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.

2025-04-29

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.

2025-01-21

99.

Algebraic Effects for the Rest of Us

overreacted.io/algebraic-effects-for-the-rest-of-us

2024-12-31

95.

Idiosyncra

exple.tive.org/blarg/2024/12/29/idiosyncra

Interesting setup for pet computers. Debian + sway + cage

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.

2024-11-20

88.

On "Safe" C++

izzys.casa/2024/11/on-safe-cxx

2024-10-10

81.

Gnome Files: A detailed UI examination | datagubbe.se

www.datagubbe.se/gnomefiles

2024-09-25

78.

in which interactive development saves the day

technomancy.us/189

2024-09-18

76.

Typescript is surprisingly ok for compilers

matklad.github.io/2023/08/17/typescript-is-surprisingly-ok-for-compilers.html

2024-08-18

68.

Permacomputing

permacomputing.net

Permacomputing is both a concept and a community of practice oriented around issues of resilience and regenerativity in computer and network technology inspired by permaculture.

2024-08-15

67.

Writing a C Compiler

nostarch.com/writing-c-compiler

A fun, hands-on guide to writing your own compiler for a real-world programming language.

66.

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.html

A lightning post on logic programming in Haskell to construct a workout weekly schedule given the set of exercises, days and constraints.

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 …

2024-06-24

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.

2024-06-17

37.

Sqlc: 2024 check in — brandur.org

brandur.org/fragments/sqlc-2024

2024-06-13

27.

Category Theory for Programmers: The Preface

bartoszmilewski.com/2014/10/28/category-theory-for-programmers-the-preface
22.

API Tokens: A Tedious Survey

fly.io/blog/api-tokens-a-tedious-survey

Comparison between types of API tokens.

2024-06-11

8.

gamja: Simple IRC web client

sr.ht/~emersion/gamja