Dimitris Zorbas zorbash

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written, the development of the Promises/A+ specification has made the original emphasis on Promises/A seem somewhat outdated.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.

JavaScript Code

var str = "hi";

Memory allocation:

Address	Value	Description
`......`	...

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

	# Server App
	# This file must be in lib/myapp/api.rb
	module MyApp
	module Entities
	class Products < Grape::Entity
	expose :id, :code, :name, :short_description
	expose :description, :unless => { :collection => true }
	expose (:category) { \|model, options\| model.category.name }
	expose (:brand) { \|model, options\| model.brand.name }
	end

	// This method gives you an easier way of calling super
	// when you're using Backbone in plain javascript.
	// It lets you avoid writing the constructor's name multiple
	// times. You still have to specify the name of the method.
	//
	// So instead of having to write:
	//
	// User = Backbone.Model.extend({
	// save: function(attrs) {
	// this.beforeSave(attrs);

	// Require.js allows us to configure shortcut alias
	require.config({
	// The shim config allows us to configure dependencies for
	// scripts that do not call define() to register a module
	shim: {
	'socketio': {
	exports: 'io'
	},
	'underscore': {
	exports: '_'

	/*
	* Takes provided URL passed as argument and make screenshots of this page with several viewport sizes.
	* These viewport sizes are arbitrary, taken from iPhone & iPad specs, modify the array as needed
	*
	* Usage:
	* $ casperjs screenshots.js http://example.com
	*/

	var casper = require("casper").create();

	# sudo ln -s ~/nginx.conf unicorn.conf
	upstream app_server {
	server unix:/tmp/unicorn_padrino.sock fail_timeout=0;
	}

	server {
	listen 80;
	charset utf-8;
	server_name db.innshine.com;

	# MAC manipulators
	alias random_mac='sudo ifconfig en0 ether `openssl rand -hex 6 \| sed "s/\(..\)/\1:/g; s/.$//"`'
	alias restore_mac='sudo ifconfig en0 ether YOUR_ORIGINAL_MAC_ADDRESS_GOES_HERE'

	.DS_Store
	tmp/