code: function(fn) {
        var codes = [], i, len;
        for(i = 0, len = this.length; i < len; i++) {
          var code = this.charCodeAt(i);
          codes.push(code);
          if(fn) fn.call(this, code, i);
        }
        return codes;
      }
docs: *
  @method codes([fn])
  @returns Array
  @short Runs callback [fn] against each character code in the string. Returns an array of character codes.
  @example
  
  'jumpy'.codes() -> [106,117,109,112,121]
  'jumpy'.codes(function(c) {
  // Called 5 times: 106, 117, 109, 112, 121
  });
  
  *