grav’s gists

grav / dropshadow.html

Last active April 2, 2020 12:07

Slow printing issue in Chromium

	<html><head>
	<style>
	img {
	filter: drop-shadow(0.1em 0.2em 0.3em)
	}
	</style>
	</head>
	<body><img src="https://www.w3schools.com/html/pic_trulli.jpg">
	<img src="https://www.w3schools.com/html/img_girl.jpg">
	<img src="https://www.w3schools.com/html/img_chania.jpg">

grav / totalIndexedDbSize.js

Created January 7, 2020 14:05

Measure total size of all indexeddb objects

	// forked from
	// https://github.com/jonnysmith1981/getIndexedDbSize

	function showIndexedDbSize(dbname) {
	"use strict";
	var db;
	var totalSize = 0

	function openDatabase(dbname) {
	return new Promise(function(resolve, reject) {

grav / reagent-inspect.clj

Last active November 26, 2019 06:42

Wrapper component that allows you to inspect the properties of its child component, when hovered+ctrl

	(defn inspect []
	(let [state (r/atom nil)]
	(fn [[c & args]]
	(let [{:keys [hover]} @state]
	[:div {:on-mouse-over #(do
	(swap! state assoc :hover (.getModifierState % "Control")))
	:on-mouse-out #(swap! state assoc :hover false)
	:style {:display :inline-block
	:width "100%"
	:height "100%"

grav / iommu_groups.sh

Created July 17, 2019 19:19

	#!/bin/bash
	shopt -s nullglob
	for g in /sys/kernel/iommu_groups/*; do
	echo "IOMMU Group ${g##*/}:"
	for d in $g/devices/*; do
	echo -e "\t$(lspci -nns ${d##*/})"
	done;
	done;

grav / socket_repl.clj

Created April 28, 2019 11:28

Lumo plumbing

	;; to use in cursive:

	;; 1. create a project.clj, deps.edn or pom.xml with tubular dependency and open in Cursive
	;; 2. create new run-config
	;; 3. select clojure.main as repl type
	;; 4. specify socket_repl.clj (this file) in `Parameters`
	;; 5. run lumo with socket repl:
	;; lumo --socket-repl 5555 --classpath src-dir1:src-dir2 --dependencies some/dep:0.1.0-SNAPSHOT,other-dep:1.0.1
	;; 6. run run-config from cursive

grav / gesture_recog_with_closures_swift5.swift

Created April 9, 2019 11:22

	//Parameter is the type of parameter passed in the selector
	public class ClosureSelector<Parameter> {

	public let selector : Selector
	private let closure : ( Parameter ) -> ()

	init(withClosure closure : @escaping ( Parameter ) -> ()){
	self.selector = #selector(ClosureSelector.target)
	self.closure = closure
	}

grav / runloop.cljs

Last active December 16, 2018 14:07

grav / runloop.js

Created December 16, 2018 12:03

	function sleep(s){
	return new Promise(function(resolve,reject) {
	setTimeout(_ => {
	resolve();
	}, 1000 * s);
	});
	}

	async function start(){
	while(true){

grav / ordered-keys-from-edn-map.clj

Last active September 8, 2018 10:21

Retrieve order of keys in an edn-map

	;; Retrieve order of keys in an edn-map

	(defn ordered-keys-from-edn-map [edn]
	(assert (map? (read-string edn)))
	(let [list-of-symbols (-> edn
	(clojure.string/replace-first "{" "[")
	(clojure.string/replace #"}(\s+)$" "]")
	read-string)]
	(->> list-of-symbols
	(partition 2)

grav / xhr-alternative.cljs

Last active December 13, 2017 22:52

Mikkel Gravgaard grav