danielrw7

function hasProperty(obj, prop) {
    return obj[prop] !== undefined;
};

Array.prototype.callFunction = function(target, key) {
    var args = [].splice.call(arguments, 0).slice(2);

    this.forEach(function(elem) {
        try {
            if (hasProperty(elem, key) && typeof elem[key] == 'function') {

danielrw7

MapObj = (obj, mapFn) ->
   if obj.length && obj.join
      return obj.map(mapFn)
   result = {}
   result[key] = mapFn(val, key) for key, val of obj
   result

FilterObj = (obj, filterFn) ->
   if obj.length && obj.join
      return obj.filter(filterFn)

danielrw7

var MapObj = function(obj, mapFn) {
  var key, result, val;
  if (obj.length && obj.join) {
    return obj.map(mapFn);
  }
  result = {};
  for (key in obj) {
    val = obj[key];
    result[key] = mapFn(val, key);
  }

danielrw7

var variableArgs,
  slice = [].slice;

variableArgs = function(callbacks) {
  var defaultKey;
  defaultKey = 'default';
  return function() {
    var args, numArgs, ref;
    args = 1 <= arguments.length ? slice.call(arguments, 0) : [];
    numArgs = args.length || 0;

danielrw7

function typedArgument(type, value, defaultValue) {
  return (typeof value !== 'undefined' && typeof value !== 'null' && ((typeof type === 'function' && value.constructor === type) || (typeof type === 'string' && (!type || typeof value === type)))) ? value : defaultValue;
}

/** Example: **/
function add(a,b) {
  var a = typedArgument(Number, a, 0);
  var b = typedArgument('number', b, 0);
  return a + b;
}

danielrw7

function extend() {
  var result = arguments[0];
  for(var i = 1; i < arguments.length; i++) {
    for(var key in arguments[i]) {
      result[key] = arguments[i][key];
    }
  }
  return result;
}

danielrw7

function toArray(array) {
  return Array.prototype.slice.call(array);
}

danielrw7

function extend() {
  var result = arguments[0];
  for(var i = 1; i < arguments.length; i++) {
    for(var key in arguments[i]) {
      result[key] = arguments[i][key];
    }
  }
  return result;
}

danielrw7

var object = {
    "value": 1,
    "anotherValue": 2,
    "nested": {
        "value": 3
    }
};

object.value
// => 1

danielrw7

function pickWeighted(array) {
    var n = Math.random(),
        totalChances = 0,
        total = 0,
        result;
    array = array.map(function(row) {
        var min, max;
        var chance = typeof row == 'object' || typeof row == 'function' ? row.chance : 1;
        if (chance) {
            min = totalChances;