20 random bookmarks

2025-10-24

137.

How to Run 1:1s as an Engineering Manager

justoffbyone.com

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.

2025-07-03

125.

Beamer Viewer

beamerviewer.euxane.eu

This web app displays notes and slides in separate windows,
keeping both synchronised.
It accepts simple, double-width, or double-height PDF presentations:

2025-05-28

114.

SAT Live!

localhost:4000

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.

2025-03-18

102.

CASCII - ASCII Diagram Builder

cascii.app

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

2024-12-31

95.

Idiosyncra

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

Interesting setup for pet computers. Debian + sway + cage

2024-12-17

93.

GBA From Scratch With Ferris

lokathor.github.io/gba-from-scratch

2024-09-16

74.

Wayland: i3 to Sway migration

anarc.at/software/desktop/wayland

2024-09-02

70.

Parsing awk is tricky

www.raygard.net/awkdoc/pages/awk_parsing_is_tricky.html

A somewhat compact implementation of the awk programming language

2024-08-09

64.

Store Code Discussions in Git using Git Notes

wouterj.nl/2024/08/git-notes

Code discussions contain relevant information. Isn’t it a shame that we
keep these in the centralized GitHub/GitLab servers, far away from our
decentralized Git code? As soon as we move provider, we’ll lose all old
discussions! And how do you ever find the pull requests back from 5
years ago? Symfony has implemented a lightweight solution to this problem
years ago using a less-known feature of Git: Git Notes.

2024-06-26

54.

You probably wrote half a monad by accident

gieseanw.wordpress.com/2024/06/25/you-probably-wrote-half-a-monad-by-accident

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

2024-06-19

42.

Pimalaya

pimalaya.org

Official website of the Pimalaya project.

2024-06-13

27.

Category Theory for Programmers: The Preface

bartoszmilewski.com/2014/10/28/category-theory-for-programmers-the-preface
17.

Arena allocator tips and tricks

nullprogram.com/blog/2023/09/27

2024-06-11

11.

Optimizing Font Files for the Modern Web

documentation.platformos.com/best-practices/performance/optimizing-font-files
9.

Exploring Gleam, a type-safe language on the BEAM!

christopher.engineering/en/blog/gleam-overview

From Erlang, to Elixir and now, GLEAM!?