William Comnisky wcomnisky

JavaScript function hoisting by example

Below are many examples of function hoisting behavior in JavaScript. Ones marked as works successfuly print 'hi!' without errors.

To play around with these examples (recommended) clone them with git and execute them with e.g. node a.js

(I may be using incorrect terms below, please forgive me)

create different ssh key according the article Mac Set-Up Git

$ ssh-keygen -t rsa -C "[email protected]"

	/*
	********************************************************************************
	Golang - Asterisk and Ampersand Cheatsheet
	********************************************************************************

	Also available at: https://play.golang.org/p/lNpnS9j1ma

	Allowed:
	--------
	p := Person{"Steve", 28} stores the value

	Terminal Commands:

	One webcam:

	ffmpeg -f alsa -ac 2 -i hw:1,0 -f v4l2 -s 1280x720 -r 10 -i /dev/video1 -vcodec libx264 -pix_fmt yuv420p -preset ultrafast -r 25 -g 20 -b:v 2500k -codec:a libmp3lame -ar 44100 -threads 6 -b:a 11025 -bufsize 512k -f flv rtmp://a.rtmp.youtube.com/live2/YOURSTREAMNAMEHERE

	Two webcam overlay:

	ffmpeg -f alsa -ac 2 -i hw:1,0 -f v4l2 -s 1280x720 -r 10 -i /dev/video1 -f v4l2 -s 320x240 -r 10 -i /dev/video0 -filter_complex "[1:v]setpts=PTS-STARTPTS[bg]; [2:v]setpts=PTS-STARTPTS[fg]; [bg][fg]overlay=shortest=1 [out]" -map "[out]" -map 0:a -vcodec libx264 -pix_fmt yuv420p -preset veryfast -r 25 -g 20 -b:v 2500k -codec:a libmp3lame -ar 44100 -threads 6 -b:a 11025 -bufsize 512k -f flv rtmp://a.rtmp.youtube.com/live2/YOURSTREAMNAMEHERE

	import java.util.concurrent.CountDownLatch;

	import org.junit.rules.TestRule;
	import org.junit.runner.Description;
	import org.junit.runners.model.Statement;

	/**
	* A rule runs each test case many times in parallel. Can be used for load tests. If more than one
	* of the parallel executions fails, only the first fail is reported. Example: To run each test
	* method in the class 5 times, add <code> @Rule

	(function() {

	var script,
	scripts = document.getElementsByTagName('script')[0];

	function load(url) {
	script = document.createElement('script');
	script.async = true;
	script.src = url;
	scripts.parentNode.insertBefore(script, scripts);

	<?php
	/**
	* Create a web friendly URL slug from a string.
	*
	* Although supported, transliteration is discouraged because
	* 1) most web browsers support UTF-8 characters in URLs
	* 2) transliteration causes a loss of information
	*
	* @author Sean Murphy <[email protected]>
	* @copyright Copyright 2012 Sean Murphy. All rights reserved.

	Latency Comparison Numbers (~2012)
	----------------------------------
	L1 cache reference 0.5 ns
	Branch mispredict 5 ns
	L2 cache reference 7 ns 14x L1 cache
	Mutex lock/unlock 25 ns
	Main memory reference 100 ns 20x L2 cache, 200x L1 cache
	Compress 1K bytes with Zippy 3,000 ns 3 us
	Send 1K bytes over 1 Gbps network 10,000 ns 10 us
	Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD