josfaber

 /**
  * return a random, unique-ish id
  */
 function guid() {
      return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
          var r = Math.random()*16|0, v = c == 'x' ? r : (r&0x3|0x8);
          return v.toString(16);
      });
 }

josfaber

 /**
  * returns the number of possible combinations for given number of participants
  * (e.g. 6 soccer teams have to play 15 matches to have everyone playing every other once)
  */
 function numCombinations(participants) {
      return 0.5 * participants * (participants-1);
 }

josfaber

FROM wordpress:php7.4-apache

RUN a2enmod rewrite && a2enmod headers

josfaber

version: '3.1'

services:

  wp:
    container_name: wordpress
    build: .
    ports:
      - 8080:80
    restart: always

josfaber

/**
 * returns the distance between two lat long coordinates
 * (uses degToRad and radToDeg functions below)
 */
function latlongdist(lat1, long1, lat2, long2) {
    var theta = long1 - long2;
    var miles = (Math.sin(degToRad(lat1)) * Math.sin(degToRad(lat2))) + (Math.cos(degToRad(lat1)) * Math.cos(degToRad(lat2)) * Math.cos(degToRad(theta)));
    miles = radToDeg(Math.acos(miles)) * 60 * 1.1515;
    var feet = miles * 5280;
    var yards = feet / 3;

josfaber

docker exec -i mysql_container mysql -uroot -prootpassword dbname < ./dbdump.sql 

josfaber

add_action( 'admin_init', 'wpse_136058_debug_admin_menu' );
function wpse_136058_debug_admin_menu() {

    echo '<pre>' . print_r( $GLOBALS[ 'menu' ], TRUE) . '</pre>';
}

josfaber

// package.json

{
  "name": "waarom",
  "version": "1.0.0",
  "description": "",
  "main": "webpack.config.js",
  "dependencies": {},
  "devDependencies": {
    "@babel/core": "^7.16.0",

josfaber

HEVC + alpha (Safari)
ffmpeg -i in.mov -c:v hevc_videotoolbox -allow_sw 1 -alpha_quality 0.75 -vtag hvc1 out.mp4

VP9 + alpha (Rest of browsers)
ffmpeg -i in.mov -c:v libvpx -b:v 2000k -auto-alt-ref 0 -pix_fmt yuva420p out.webm 

josfaber

const dateToStr = (input) => {
	if (input.length !== 6) {
		return "wrong date syntax, use YYYYMM";
	}
	
	const parts = input.match(/([0-9]{4})([0-9]{2})/);
	if (!parts) {
		return "wrong date syntax, use YYYYMM";
	}