20 random bookmarks

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:

2025-06-20

Reposted 122.

Cursed Knowledge | Immich

immich.app/cursed-knowledge

Things we wish we didn't know

2025-06-18

120.

zb beta released

www.zombiezen.com/blog/2025/06/zb-beta-release

zb is a tool for reproducibly building software, similar to Bazel.
(See the comparison page if you’re curious to know the differences.)
When a software build process is reproducible,
it will produce the exact same output
when given the same inputs.
Reproducibility is a desirable property for a software build process to have:
it simplifies debugging,
it enables build speed-ups,
and it is essential for digital supply chain security.
However, reproducibility is a difficult goal to achieve.

2025-05-30

115.

The PGP Problem

www.latacora.com/blog/2019/07/16/the-pgp-problem

Why do people keep telling me to use PGP? The answer is that they shouldn’t be telling you that, because PGP is bad and needs to go away.

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.

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.

2025-05-06

107.

Debian installation with encrypted BTRFS

chaos.tomaskral.eu/guides/debian-encrypted-btrfs-root

2025-04-24

105.

Instrumenting Axum projects

determinate.systems/posts/instrumenting-axum

2024-12-31

95.

Idiosyncra

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

Interesting setup for pet computers. Debian + sway + cage

2024-12-17

90.

Using Nix to Try Tools

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

2024-11-07

87.

Proposal for a Django project template

david.guillot.me/en/posts/tech/proposal-for-a-django-project-template

My take on what could be a project template for Django advanced usage, with modern tooling (for Python and UI dependencies, as well as configuration/environment management), but not too opinionated.

2024-09-25

78.

in which interactive development saves the day

technomancy.us/189

2024-09-19

77.

Blogging in Djot instead of Markdown

www.jonashietala.se/blog/2024/02/02/blogging_in_djot_instead_of_markdown

2024-08-08

63.

More than 200 orphaned Debian packages moved to git, 216 to go

www.hungry.com/~pere/blog/More_than_200_orphaned_Debian_packages_moved_to_git__216_to_go.html

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 …

2024-07-09

61.

Using use in Gleam

erikarow.land/notes/using-use-gleam

2024-06-17

35.

OpenBSD, the computer appliance maker's secret weapon

hiandrewquinn.github.io/til-site/posts/openbsd-the-computer-appliance-maker-s-secret-weapon

Between our ESP32 prokaryotic organisms and our 24/7 Internet-enabled megafauna servers, there exists a vast and loosely-defined ecosystem of things the B2B world likes to call computer appliances. Picture a bespoke Pi 4 packaged up neatly with some Python scripts, a little fancy plastic embossing, and maybe a well-guarded id_ed25519.pub in case you end up in hot water during the (long - very long, stable cash flow for generations long) maintenance contract, and you’re in the ballpark.

2024-06-14

29.

pounce - IRC bouncer

git.causal.agency/pounce/about

2024-06-13

19.

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

nullprogram.com/blog/2023/10/05