Lei Zhu lei-clearsky

Using Git

	// Problem 1
	(() => {
	console.log('this is the start');
	setTimeout(function cb() {
	console.log('this is a msg from call back');
	});
	console.log('this is just a message');
	setTimeout(function cb1() {
	console.log('this is a msg from call back1');
	}, 0);

	// https://levelup.gitconnected.com/understand-javascript-promises-by-building-a-promise-from-scratch-84c0fd855720
	// http://thecodebarbarian.com/write-your-own-node-js-promise-library-from-scratch.html

	class PromiseSimple {
	constructor(executionFunc) {
	this.chains = [];
	this.handleError = () => { console.log('err!'); };
	this.onResolve = this.onResolve.bind(this);
	this.onReject = this.onReject.bind(this);
	executionFunc(this.onResolve, this.onReject);

	/*
	* Difficulty: Easy
	* Create an event emitter that goes like this
	* emitter = new Emitter();
	*
	* Allows you to subscribe to some event
	* emitter.subscribe('event1', callback1);
	* (you can have multiple callbacks to the same event)
	* emitter.subscribe('event1', callback2);
	*

	class PromiseSimple {

	}

	fakeApiBackend = () => {
	const user = {
	username: 'John Doe',
	favoriteNumber: 42,
	profile: 'https://gitconnected.com/johndoe'
	};

	function GameOfLife(width,height) {
	this.width = width;
	this.height = height;
	this.nextState = [];
	}

	GameOfLife.prototype.createAndShowBoard = function () {
	// create <table> element
	var goltable = document.createElement("tbody");

	var traverseDomAndCollectElements = function(matchFunc, startEl) {
	var resultSet = [];

	if (typeof startEl === "undefined") {
	startEl = document.body;
	}

	// if (matchFunc(startEl))
	// resultSet.push(startEl);

	def get_from_digg
	res = JSON.load(RestClient.get('http://digg.com/api/news/popular.json'))
	res["data"]["feed"].map do \|story\|
	s = {}
	tags = []
	s[:title] = story["content"]["title"]
	story["content"]["tags"].map do \|tag\|
	tags << tag["display"]
	end
	s[:category] = tags.join(", ")