code: function ( obj, arg ) {
  		array.remove( obj, 0, obj.length );
  		array.each( arg, function ( i ) {
  			obj.push( i );
  		});
  
  		return obj;
  	}
docs: Replaces the contents of `obj` with `arg`
  
  @method replace
  @param  {Array} obj Array to modify
  @param  {Array} arg Array to become `obj`
  @return {Array}     New version of `obj`