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.

2025-09-23

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.

2025-08-21

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

112.

Async from scratch 1: What's in a Future, anyway? | natkr's ramblings

natkr.com/2025-04-10-async-from-scratch-1

There 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.

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.

2024-12-17

90.

Using Nix to Try Tools

entropicthoughts.com/using-nix-to-try-tools

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.

2024-11-20

88.

On "Safe" C++

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

2024-09-30

79.

On Leaving Apple

typesanitizer.com/blog/leaving-apple.html

2024-09-25

78.

in which interactive development saves the day

technomancy.us/189

2024-09-10

71.

run freebsd in qemu on linux

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

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.

2024-06-21

49.

On testing Go code using the standard library | Henrique Vicente

henvic.dev/posts/testing-go

Most programming language ecosystems provide assert functions in their testing libraries but not Go's. Go's standard testing package follows a more direct and to-the-point approach.

2024-06-20

48.

build2 | C/C++ Build Toolchain

build2.org

build2 is an open source (MIT), cross-platform build toolchain that aims to approximate Rust Cargo's convenience for developing and packaging C/C++ projects while providing more depth and flexibility, especially in the build system.

2024-06-14

33.

A useful shell prompt

blog.meain.io/2022/my-shell-prompt

Featureful zsh prompt.

30.

litterbox - IRC logger

git.causal.agency/litterbox/about

2024-06-13

24.

Category Theory in Context

math.jhu.edu/~eriehl/context.pdf
21.

Building Go programs with Nix Flakes

xeiaso.net//blog/nix-flakes-go-programs

2024-06-12

12.

I really like the RP2040

dgroshev.com/blog/rp2040

2024-06-11

11.

Optimizing Font Files for the Modern Web

documentation.platformos.com/best-practices/performance/optimizing-font-files