Jeremy Karlsson enjikaka

Install ImageMagick for image conversion:

brew install imagemagick

Install tesseract for OCR:

brew install tesseract --all-languages

Or install without --all-languages and install them manually as needed.

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

Service Worker - offline support for the web

Progressive apps - high-res icon, splash screen, no URL bar, etc.

Progressive Web Apps: Escaping Tabs Without Losing Our Soul

	<!doctype html>

	<!-- http://taylor.fausak.me/2015/01/27/ios-8-web-apps/ -->

	<html>
	<head>
	<title>iOS 8 web app</title>

	<!-- CONFIGURATION -->

	var url = 'http://static1.kevincennis.com/sounds/callmemaybe.mp3'
	, audio = new Audio(url)
	, context = new webkitAudioContext()
	// 512 samples per frame, stereo input, mono output
	, processor = context.createJavaScriptNode(512, 2, 1)
	, sourceNode

	audio.addEventListener('canplaythrough', function(){
	sourceNode = context.createMediaElementSource(audio)
	sourceNode.connect(processor)

	#!/usr/bin/env bash

	# A basic Self Signed SSL Certificate utility
	# by Andrea Giammarchi @WebReflection

	# https://www.webreflection.co.uk/blog/2015/08/08/bringing-ssl-to-your-private-network

	# # to make it executable and use it
	# $ chmod +x certificate
	# $ ./certificate # to read the how-to

	/**
	* Export all data from an IndexedDB database
	*
	* @param {IDBDatabase} idbDatabase The database to export from
	* @return {Promise<string>}
	*/
	export function exportToJson(idbDatabase) {
	return new Promise((resolve, reject) => {
	const exportObject = {}
	if (idbDatabase.objectStoreNames.length === 0) {

	sudo dnf install -y http://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-$(rpm -E %fedora).noarch.rpm
	sudo dnf install -y akmods "kernel-devel-uname-r == $(uname -r)"
	sudo dnf install -y broadcom-wl
	sudo akmods
	sudo reboot

	Encoder av1_nvenc [NVIDIA NVENC av1 encoder]:
	General capabilities: dr1 delay hardware
	Threading capabilities: none
	Supported hardware devices: cuda cuda d3d11va d3d11va
	Supported pixel formats: yuv420p nv12 p010le yuv444p p016le yuv444p16le bgr0 bgra rgb0 rgba x2rgb10le x2bgr10le gbrp gbrp16le cuda d3d11
	av1_nvenc AVOptions:
	-preset <int> E..V....... Set the encoding preset (from 0 to 18) (default p4)
	default 0 E..V.......
	slow 1 E..V....... hq 2 passes
	medium 2 E..V....... hq 1 pass