Function BasilSet

src/basil.set.js:11–280

()

}(function (Basil) {

	var BasilSet = function () {
		var _indexOf = function (array, item) {

			for (var i = 0, length = array.length; i < length; i++) {
				if (array[i] === item)
					return i;
			}

			return -1;
		},
		_contains = function (array, item) {
			return _indexOf(array, item) >= 0;
		},
		//http://stackoverflow.com/questions/6274339/how-can-i-shuffle-an-array-in-javascript
		_shuffle = function (o){
			for (var j, x, i = o.length; i; j = Math.floor(Math.random() * i), x = o[--i], o[i] = o[j], o[j] = x);
			return o;
		},
		_union = function () {
			var args = arguments[0],
				allElements = [],
				uniqElements = [];

			for (var i = 0, length = args.length; i < length; i++)
				allElements = allElements.concat(args[i]);

			for (i = 0, length = allElements.length; i < length; i++)
				if (!_contains(uniqElements, allElements[i]))
					uniqElements.push(allElements[i]);

			return uniqElements;
		},
		_difference = function () {
			arguments = arguments[0];
			var firstArray = arguments[0], otherArrays = [], diffArray = [];
			for (var i = 1, length = arguments.length; i < length; i++) {
				otherArrays = otherArrays.concat(arguments[i]);
			}

			for (i = 0, length = firstArray.length; i < length; i++) {
				if (!_contains(otherArrays, firstArray[i])) {
					diffArray.push(firstArray[i]);
				}
			}

			return diffArray;
		},
		_intersection = function () {
			arguments = arguments[0];
			var result = [], firstArray = arguments[0],
				argsLength = arguments.length;

			for (var i = 0, length = firstArray.length; i < length; i++) {
				var item = firstArray[i];

				if (_contains(result, item))
					continue;