Ruby-like Question: Make this function shorter (ActionScript 3)

Question

I just wrote this incredibly verbose code to turn numbers like 2 into 02. Can you make this function shorter, please (maintaning the functionality)?

Answer 1

How about this:

public static function format(n:int, len:int):String {
  var v:String = n.toString();
  return (v.length >= len) ? v : String(Math.pow(10, len) + n).substr(1);
}

There is not built-in function to do this btw. If you need decent padding functions, take a look at the StringUtils in Apache Commons Lang.