slimlime

This article has been given a more permanent home on my blog. Also, since it was first written, the development of the Promises/A+ specification has made the original emphasis on Promises/A seem somewhat outdated.

You're Missing the Point of Promises

Promises are a software abstraction that makes working with asynchronous operations much more pleasant. In the most basic definition, your code will move from continuation-passing style:

getTweetsFor("domenic", function (err, results) {
 // the rest of your code goes here.

TypeScript and currying

In functional programming you often want to apply a function partly. A simple example is a function add. It would be nice if we could use add like:

var res2 = add(1, 3); // => 4

var add10To = add(10);
var res = add10To(5); // => 15

EMOJI CHEAT SHEET

Emoji emoticons listed on this page are supported on Campfire, GitHub, Basecamp, Redbooth, Trac, Flowdock, Sprint.ly, Kandan, Textbox.io, Kippt, Redmine, JabbR, Trello, Hall, plug.dj, Qiita, Zendesk, Ruby China, Grove, Idobata, NodeBB Forums, Slack, Streamup, OrganisedMinds, Hackpad, Cryptbin, Kato, Reportedly, Cheerful Ghost, IRCCloud, Dashcube, MyVideoGameList, Subrosa, Sococo, Quip, And Bang, Bonusly, Discourse, Ello, and Twemoji Awesome. However some of the emoji codes are not super easy to remember, so here is a little cheat sheet. ✈ Got flash enabled? Click the emoji code and it will be copied to your clipboard.

People

😄

Useful emoji for git commit messages

If you add emoji to your commit messages for a GitHub repo, they become less boring, and you can convey the kind of change you're adding. See the full set of GitHub supported emoji here (also useful for easy copy&paste via a simple click).

The following is a possible scheme to use:

	So you've cloned somebody's repo from github, but now you want to fork it and contribute back. Never fear!

	Technically, when you fork "origin" should be your fork and "upstream" should be the project you forked; however, if you're willing to break this convention then it's easy.

	* Off the top of my head *

	1. Fork their repo on Github
	2. In your local, add a new remote to your fork; then fetch it, and push your changes up to it

	git remote add my-fork [email protected]

	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

	// http://stackoverflow.com/questions/11616630/json-stringify-avoid-typeerror-converting-circular-structure-to-json/11616993#11616993
	var o = {};
	o.o = o;

	var cache = [];
	JSON.stringify(o, function(key, value) {
	if (typeof value === 'object' && value !== null) {
	if (cache.indexOf(value) !== -1) {
	// Circular reference found, discard key
	return;

	let hasBlobConstructor = typeof(Blob) !== 'undefined' && (function () {
	try {
	return Boolean(new Blob());
	} catch (e) {
	return false;
	}
	}());

	let hasArrayBufferViewSupport = hasBlobConstructor && typeof(Uint8Array) !== 'undefined' && (function () {
	try {

	function logClass(target: any) {

	// save a reference to the original constructor
	var original = target;

	// a utility function to generate instances of a class
	function construct(constructor, args) {
	var c : any = function () {
	return constructor.apply(this, args);
	}

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	// @description Discover the Steam queue three times to get the sale cards
	// @version 2.3.0
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