AS2 ArrayExtensions

/**
 * Extensions to the AS2 Array class
 */
class ArrayExtensions
{
	
	public function ArrayExtensions() {

	}
	
	public static function initialize() {
		Array.prototype.map = function(mapFunction:Function):Array {
			var result:Array = new Array();
			var len:Number = this.length;

			for (var i:Number = 0; i < len; i++) {
				result.push(mapFunction(this[i]));
			}
			return result;
		}
		
		Array.prototype.reduce = function(initValue:Object, reduceFunction:Function):Object {
			var result:Object = initValue;
			var len:Number = this.length;

			for (var i:Number = 0; i < len; i++) {
				result = reduceFunction(result, this[i]);
			}
			return result;
		}
	}
	
}

Usage:

ArrayExtensions.initialize();

var sum = [1,2,3,4].map(function(n) { return n*2 } ).reduce(0, function(a,n) { return a+=n } );

trace(sum)  // Output 20;

nice code dude I will use it for sure...