/**
* This method will retain only those elements not in the specified array.
*
* @access public
* @param \Traversable $values an array of elements that are to be retained
* @return boolean whether any elements were retained
*/
public function retainValues($values)
{
$this->assertNotTraversable($values);
$elements = array();
foreach ($values as $value) {
$serialization = (string) serialize($value);
foreach ($this->elements as $key => $temp) {
Core\DataType::enforce('integer|string', $key);
if ((string) serialize($temp) == $serialization) {
$elements[$key] = $temp;
}
}
}
$this->elements = $elements;
return !$this->isEmpty();
}
