forallasync

forAllAsync
===

Basically a forEachAsync that allows n async calls at once.

Another way to think of it is as a thread pool for JavaScript.

Say you have 500 http requests that you want to get done
10 at a time and then know when they've all finished...
then forAllAsync is your guy!

Installation
---

Node.JS (Server):

``bash
npm install forallasync
`

Browser Installation
===

You can install from bower:

`bash
bower install forAllAsync
`

Or download the raw file from :

`bash
wget https://raw.github.com/FuturesJS/forAllAsync/master/forAllAsync.js
`

Or build with pakmanager:

`bash
pakmanager build forAllAsync
`

Usage
---

`javascript
;(function (exports) {
'use strict';

var forAllAsync = exports.forAllAsync || require('forallasync').forAllAsync
, maxCallsAtOnce = 4 // default
, arr
;

function onEach(complete, item, i) {
setTimeout(function () {
console.log(item);
complete();
}, 500);
}

arr = ['a', 'b', 'c', 'd'];
forAllAsync(arr, onEach, maxCallsAtOnce).then(function () {
console.log('did all the things');
});
}('undefined' !== typeof exports && exports || new Function('return this')())));
`

API
---

* forAllAsync(array, iterator, n).then(callback)
* execute iterator for each element in array, n at a time and call callback` when all are complete