Provides additional functions on arrays. Currently available functions are:
intersect(array): creates an intersection of the current array and the given one.
differentiate(array): returns the symmetric difference between this array and the given one.
getRange(int, int): Returns the given number of elements from the array starting at the given index. If the second parameter is not defined, all elements until the end of the array will be returned.
reverse(): Reverses the elements within the array and returns as an array.
Simply include the javascript file after including MooTools core.
Then use them:
var a = [1, 2, 3, 4, 5];
var b = [4, 5, 6, 7, 8];
a.intersect(b);
// returns [4, 5]
a.differentiate(b);
// returns [1, 2, 3, 6, 7, 8]
a.getRange(2, 3);
// returns [3, 4, 5]
a.getRange(3);
// returns [4, 5]
a.reverse();
// return [5, 4, 3, 2, 1]