briancavalier

function join(promises) {
	var promise = new Promise();
	promise.then(
		function(val) {
			for (var i = 0; i < promises.length; i++) {
				promises[i].resolve(val);
			}
		},
		function(err) {
			for (var i = 0; i < promises.length; i++) {

briancavalier

Promise.prototype.then = function (onResolve, onReject, onProgress) {
	if(isPromise(onResolve)) {
		// Chain promise
		this.then(
			function(val)    { onResolve.resolve(onReject ? onReject : val); },
			function(err)    { onResolve.reject(err); },
			function(update) { onResolve.progress(update); }
		);
	} else {
		// capture calls to then()

briancavalier

/*
	Function: chain
	Chain two <Promises> such that when the first completes, the second
	is completed with either the completion value of the first, or
	in the case of resolve, completed with the optional resolveValue.

	Parameters:
		first - first <Promise>
		second - <Promise> to complete when first <Promise> completes
		resolveValue - optional value to use as the resolution value

briancavalier

JS Conf slides - 2011

Track A

• Bytes and Blobs by David Flanagan
• Conference Wifi Redux by Malte Ubi
• Sashimi - https://github.com/cramforce/Sashimi
• Run Your JS everywhere with Jellyfish by Adam Christian - http://jelly.io Project
• Fighting Crime and Kicking Apps with Batman.js by Nick Small
• Hello Jo by Dave Balmer - Project - http://joapp.com

briancavalier

Using the new wire.js prototype factory. You can use the prototype factory with any Javascript object, including object literals, just like you'd expect, since it's based on Javascript prototype chains.

This example shows it being used on an object literal, parent1, to create child1, and on a Controller (parent2) created from an AMD module, to create a specialized child2.

As you probably guessed, this will log:

Mom 1: Hello Billy
Billy 1: Hi Mom

Also check out this example of creating dojo datastores using the prototype factory.

briancavalier

Using the new wire.js prototype factory to create dojo datastores that share a query engine. This is coming in v0.5, so check it out in the dev-05 branch

briancavalier

// Using hitch to setup an event to be disconnected later
var cxn = events.connect(newlySelected, 'onAction', this, 'onItemAction');
this._disconnectSelected = lang.hitch(events, 'disconnect', cxn);

// As a (hideous?) one-liner:
this._disconnectSelected = lang.hitch(events, 'disconnect', events.connect(newlySelected, 'onAction', this, 'onItemAction'));

briancavalier

// Load a collection of images and return an array of promises
function loadImages(srcs) {
    // srcs = array of image src urls

    // Array to hold deferred for each image being loaded
    var promises = [];

    // Call loadImage for each src, and push the returned deferred
    // onto the deferreds array
    for(var i = 0, len = srcs.length; i < len; i++) {

briancavalier

// Define a global define() that works in the current environment
(function(global) {

    var define;
    
    define = global.define;
    
    // If AMD, just use existing global.define
    if(!(typeof define === 'function' && define.amd)) {
        

briancavalier

(function (namespace, myLib) { 

    //Set up myLib here. 

    if (typeof define == 'function' && define.amd) {
        define(myLib); 
    }
    else {
        namespace.myLib = myLib;
    }