/**
* @param integer $size
* @param array $elements
*/
public function __construct($size = 1024, array $elements = array())
{
$this->size = (int) $size;
$this->size = $this->size < 1 ? 1 : $this->size;
parent::__construct($elements);
$count = $this->count();
for ($i = $count; $i < $this->size; $i++) {
$this->elements[$i] = null;
}
}
