Karol Altamirano KarolAltamirano

Encoding Video

Installing

Install FFmpeg with homebrew. You'll need to install it with a couple flags for webm and the AAC audio codec.

brew install ffmpeg --with-libvpx --with-libvorbis --with-fdk-aac --with-opus

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

Don't use VPN services.

No, seriously, don't. You're probably reading this because you've asked what VPN service to use, and this is the answer.

Note: The content in this post does not apply to using VPN for their intended purpose; that is, as a virtual private (internal) network. It only applies to using it as a glorified proxy, which is what every third-party "VPN provider" does.

A Russian translation of this article can be found here, contributed by Timur Demin.
A Turkish translation can be found here, contributed by agyild.
There's also this article about VPN services, which is honestly better written (and has more cat pictures!) than my article.

	NOTE: This document is OLD - and most of the tips here are probably outdated, since newer versions of Javascript have been
	released over the years - with newer optimizations and more emphasis on optimizing newly supported syntax.


	// Array literal (= []) is faster than Array constructor (new Array())
	// http://jsperf.com/new-array-vs-literal/15
	var array = [];

	// Object literal (={}) is faster than Object constructor (new Object())
	// http://jsperf.com/new-array-vs-literal/26

	# Create the container - we run 'echo' in the container, and reuse the same as we will be running later
	docker run -d -v /data --name redis.data dockerfile/redis echo Data-only container for Redis
	# the data container doesn't show up - nothing is running
	docker ps
	# will show 'redis.data', but as stopped
	docker ps -a

	# start redis, attach to 'redis.data'
	docker run -d -p 6379:6379 --volumes-from redis.data --name ca.redis.1 dockerfile/redis

	#import <Foundation/Foundation.h>
	#import "RCTBridgeModule.h"

	#define RCT_EXTERN_MODULE(objc_name, objc_supername) \
	RCT_EXTERN_REMAP_MODULE(objc_name, objc_name, objc_supername)

	#define RCT_EXTERN_REMAP_MODULE(js_name, objc_name, objc_supername) \
	objc_name : objc_supername \
	@end \
	@interface objc_name (RCTExternModule) <RCTBridgeModule> \

	ssh-keygen -t rsa -b 4096 -m PEM -f jwtRS256.key
	# Don't add passphrase
	openssl rsa -in jwtRS256.key -pubout -outform PEM -out jwtRS256.key.pub
	cat jwtRS256.key
	cat jwtRS256.key.pub

	import requests
	import time
	import json

	token = ''

	#Delete files older than this:
	ts_to = int(time.time()) - 30 * 24 * 60 * 60

	def list_files():

	#!/bin/bash
	keytool -list -v -keystore ~/.android/debug.keystore -alias androiddebugkey -storepass android -keypass android

	var PIXI = require('pixi.js')
	console.log(PIXI)