KiaraGrouwstra’s gists

KiaraGrouwstra / matrix-cookbook.ts

Created January 6, 2021 17:41

	type AnnotatedMatrix = {
	matrix: number[][];
	invertible: boolean;
	square: boolean;
	symmetric: boolean;
	positive_definite: boolean;
	semi_definite: boolean;
	full_rank: boolean;
	}
	// invertMatrix :: a < AnnotatedMatrix { invertible: true } :: a -> a

KiaraGrouwstra / fp.txt

Created December 28, 2020 20:21

	programming language as closer to math
	no (unencapsulated*) mutation (immutable)
	recursion
	no (unencapsulated*) side effects (io)
	no operators, everything is a (pure mathematical referentially transparent) function (lambda calculus)
	* limitations can be either used by best practice (non-pure languages) or enforced (compiler can use for optimization, type guarantees)

	strong guarantees
	easily testable (referential transparency, short functions)
	compiler is your friend: strongly typed: encapsulate anything in types

KiaraGrouwstra / pluralkit.txt

Last active January 29, 2021 17:19

	pk; system new cinereal
	pk; system description cinereal system
	pk; system tag [cinereal system]
	pk; system timezone Europe/Amsterdam
	pk; system avatar https://media.discordapp.net/attachments/606576460936904726/779666734642233374/makeup-filter.jpg

	pk; member new chiara
	pk; member chiara pronouns she/they
	pk; member chiara color #ffffff
	pk; member chiara displayname kiara 輝愛来

KiaraGrouwstra / chords.html

Last active May 8, 2021 15:04

colors for guitar notes

<html><body><table style="text-align: center; font-weight: bold;"><tbody><tr><td></td><td><h1>maj</h1></td><td><h1>min</h1></td><td><h1>7</h1></td><td><h1>5</h1></td></tr><tr><td><h1>C♯</h1></td><td><img src="https://chordify.net/img/diagrams/guitar/Cs_maj.png"></td><td><img src="https://chordify.net/img/diagrams/guitar/Cs_min.png"></td><td><img src="https://chordify.net/img/diagrams/guitar/Cs_7.png"></td><td><img src="https://chordify.net/img/diagrams/guitar/Cs_5.png"></td></tr><tr><td><h1>D</h1></td><td><img src="https://chordify.net/img/diagrams/guitar/D_maj.png"></td><td><img src="https://chordify.net/img/diagrams/guitar/D_min.png"></td><td><img src="https://chordify.net/img/diagrams/guitar/D_7.png"></td><td><img src="https://chordify.net/img/diagrams/guitar/D_5.png"></td></tr><tr><td><h1>E♭</h1></td><td><img src="https://chordify.net/img/diagrams/guitar/Eb_maj.png"></td><td><img src="https://chordify.net/img/diagrams/guitar/Eb_min.png"></td><td><img src="https://chordify.net/img/diagrams/guitar/Eb_7.png"

KiaraGrouwstra / laptops-2021-high-end-cpu.jsonl

Last active April 5, 2021 20:28

laptop stats

	{"name":"ASUS TUF Gaming A15 FX506IV-HN286T","cpu":"Ryzen 7 4800H","battery":"-"}
	{"name":"Lenovo Legion 5 15IMH05H (81Y60093MH)","cpu":"Ci7-10750H","battery":"60Wh"}
	{"name":"Asus ROG Zephyrus M GU502LV-AZ058T","cpu":"Ci7-10750H","battery":"-"}
	{"name":"Lenovo Yoga Slim 7 14ARE05 (82A2005KMH)","cpu":"Ryzen 7 4800U","battery":"60,7Wh"}
	{"name":"Asus ROG Zephyrus G14 GA401IV-HA116T","cpu":"Ryzen 9 4900HS","battery":"76Wh"}
	{"name":"Asus TUF Gaming A15 FX506IU-BQ290T","cpu":"Ryzen 7 4800H","battery":"48Wh"}
	{"name":"Asus TUF Gaming A15 FX506IV-BQ010T","cpu":"Ryzen 9 4900H","battery":"48Wh"}
	{"name":"ASUS ROG Zephyrus G14 GA401QM-K2023T-BE","cpu":"Ryzen 9 5900HS","battery":"-"}
	{"name":"ASUS ROG Flow X13 GV301QH-K6034T","cpu":"Ryzen 7 5800HS","battery":"62Wh"}
	{"name":"ASUS ROG Zephyrus G14 GA401QM-K2023T","cpu":"Ryzen 9 5900HS","battery":"-"}

KiaraGrouwstra / parsley.js

Last active October 11, 2020 16:49

browser-dom-scraper

	// scrape DOM elements into plain JS objects!
	// browser-friendly no-dep version of https://github.com/dijs/parsz
	// usage: parsley({title: 'title'})

	const keyPattern = /^([\w-]+)(\?)?$?([^)~])$?~?$?([^)])$?$/;
	const selectorPattern = /^([.-\s\w[\]=>#:()]+)?@?([\w-]+)?\s\\|?\s(.*)?$/;
	const IDENTITY_SELECTOR = ".";
	const VOID_NAME = "--";

	// http://2ality.com/2012/04/eval-variables.html

KiaraGrouwstra / dsm5-gd.json

Created May 25, 2020 16:54

DSM5 gender dysphoria test (jsonschema)

	{
	"title": "DSM5 gender dysphoria test",
	"description": "tick 2/5 -> ur trans 💁‍♀️",
	"type": "object",
	"properties": {
	"symptoms": {
	"type": "array",
	"title": "which symptoms u hv",
	"minItems": 2,
	"items": {

KiaraGrouwstra / video.sh

Last active January 22, 2020 17:38

manipulate video files using ffmpeg

	# extract good parts
	ffmpeg -ss 00:00:00 -t 00:00:51 -i VID_20191216_000516.mp4 -vcodec copy -acodec copy 1.mp4
	ffmpeg -ss 00:01:10 -i VID_20191216_000516.mp4 -vcodec copy -acodec copy 2.mp4
	# convert for concat
	ffmpeg -i 1.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate1.ts
	ffmpeg -i 2.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate2.ts
	# concatenate
	ffmpeg -i "concat:intermediate1.ts\|intermediate2.ts" -c copy -bsf:a aac_adtstoasc output.mp4
	# rotate
	ffmpeg -i output.mp4 -vf "transpose=1" rotated.mp4

KiaraGrouwstra / clear.sh

Last active August 28, 2023 13:59

arch disk space

	# sudo du -h --max-depth=1 / \| sort --human-numeric-sort -r

	# nix commands, sudo in case of global nix install
	sudo nix-collect-garbage
	sudo nix store optimise
	# nixos: nix-du

	yay -Sc
	sudo pacman -Sc

KiaraGrouwstra / mirrors.fish

Last active January 9, 2020 11:56

fix arch mirrors

cat 404.log | sed "s|error: failed retrieving file '.*\?' from \(.*\?\) : The requested URL returned error: 404|\1|g" | uniq -u | while read mirror; sudo sed -i "s|\(Server = http://$mirror/archlinux/\$repo/os/\$arch\)|#\1|g" /etc/pacman.d/mirrorlist; end

kiara KiaraGrouwstra