JosePedroDias

var r = /(https?:\/\/)?([^ \/]+)/;
var getHost = function(url, headers) {
    return headers.host || r.exec(url)[2];
};

// usage, assuming req is a HTTP nodejs request:
// getHost(req.url, req.headers)

// examples:
// getHost('/asd/zxc',                      {host:'127.0.0.1:9999'}); // returns '127.0.0.1:9999'

JosePedroDias

var async = require('async');

// work items to process
var tasks = [
  {name:'john', age:20},
  {name:'anne', age:15},
  {name:'igor', age:66}
];

// function which takes an item and calls wcb once

JosePedroDias

var mergeArrayOfArrays = function(arr) {
	var merged = [];
	return merged.concat.apply(merged, arr);
};

JosePedroDias

var arr = [
    {name:'John', age:30},
    {name:'Anne', age:12},
    {name:'Zoe',  age: 2}
];

arr.sort( sortByNumericAttribute('age') );
/*
[ {name:'Zoe',  age: 2},
  {name:'Anne', age:12},

JosePedroDias

    /**
     * @function {ObjectEl} ? creates a flash object
     * @param  {Object}      o             options
     * @param  {String}      o.swf         flash resource uri
     * @param  {DOMElement}  o.container   where to put the flash object (either parent or replacement, depending of inseadOf option)
     * @param  {String}     [o.id]         id and name for the object element
     * @param  {Number[2]}  [o.dims]       width and height, in pixels
     * @param  {Object}     [o.params]     flash params. supports allowfullscreen, allowscriptaccess, bgcolor, quality, wmode
     * @param  {Object}     [o.flashvars]  flash variables. will be passed via param flashvars transformed as query string
     * @param  {Boolean}    [o.insteadOf]  if trueish, changes behavior from append to container to replace container

JosePedroDias

var seq = function(n){
  var arr = new Array(n);
  for (var i = 0; i < n; ++i) {
      arr[i] = i;
  }
  return arr;
};

JosePedroDias

var FlowGraph = require('flowgraph')
var FlowGraphView = require('flowgraph-editor')

var insertCss = require('insert-css')

// define your graph
graph = new FlowGraph()
graph.addNode('A', ['in'], ['out'])
graph.addNode('B') // default ports are in and out
graph.addNode('C', ['1', '2', '3'], ['stdout', 'stderr'])

JosePedroDias

var humanSize = function(val) { // starts with bytes
    var i = -1;
    var units = 'B KB MB GB'.split(' ');
    do {
        val = val / 1024;
        i++;
    } while (val > 1024);

    return Math.max(val, 0.1).toFixed(1) + units[i];
};

JosePedroDias

var arr = ['a', undefined, 'b'];
// ["a", undefined, "b"]

arr.map(function(a) { return 'X'; });
// ["X", "X", "X"]

var arr2 = new Array(3);
// [undefined × 3]

arr2[0] = 'a';

JosePedroDias

Cycle.js

Basic examples without ES6

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