function(num, padding) {
      var pad = arguments.length > 1;
      var arr = this;
      var result = [];
      var divisor = ceil(this.length / num);
      getRange(0, num - 1, function(i) {
        var index = i * divisor;
        var group = arr.slice(index, index + divisor);
        if(pad && group.length < divisor) {
          getRange(1, divisor - group.length, function() {
            group = group.add(padding);
          });
        }
        result.push(group);
      });
      return result;
    }
function(num, padding) {
      var pad = arguments.length > 1;
      var arr = this;
      var result = [];
      var divisor = ceil(this.length / num);
      getRange(0, num - 1, function(i) {
        var index = i * divisor;
        var group = arr.slice(index, index + divisor);
        if(pad && group.length < divisor) {
          getRange(1, divisor - group.length, function() {
            group = group.add(padding);
          });
        }
        result.push(group);
      });
      return result;
    }
function ( num , padding ) { var pad = arguments . length > 1 ; var arr = this ; var result = [ ] ; var divisor = ceil ( this . length / num ) ; getRange ( 0 , num - 1 , function ( i ) { var index = i * divisor ; var group = arr . slice ( index , index + divisor ) ; if ( pad && group . length < divisor ) { getRange ( 1 , divisor - group . length , function ( ) { group = group . add ( padding ) ; } ) ; } result . push ( group ) ; } ) ; return result ; }
*
@method inGroups(<num>, [padding])
@returns Array
@short Groups the array into <num> arrays.
@extra [padding] specifies a value with which to pad the last array so that they are all equal length.
@example

[1,2,3,4,5,6,7].inGroups(3)         -> [ [1,2,3], [4,5,6], [7] ]
[1,2,3,4,5,6,7].inGroups(3, 'none') -> [ [1,2,3], [4,5,6], [7,'none','none'] ]

*
* @method inGroups ( <num > [ padding ] ) @returns Array @short Groups the array into <num > arrays . @extra [ padding ] specifies a value with which to pad the last array so that they are all equal length . @example