/**
* Returns the index of the first occurrence of the specified element,
* or FALSE if this collection does not contain this element.
* @param mixed
* @return int|FALSE
* @throws InvalidArgumentException
*/
protected function search($item)
{
if (is_object($item)) {
$key = spl_object_hash($item);
return parent::offsetExists($key) ? $key : FALSE;
} else {
return array_search($item, $this->getArrayCopy(), TRUE);
}
}
public function offsetExists($offset)
{
$this->load();
return parent::offsetExists($offset);
}
/**
* Removes the element at the specified position in this list.
* @param string key
* @return void
* @throws NotSupportedException, \InvalidArgumentException
*/
public function offsetUnset($key)
{
if (!is_scalar($key)) {
throw new InvalidArgumentException("Key must be either a string or an integer, " . gettype($key) . " given.");
}
$this->beforeRemove();
if (parent::offsetExists($key)) {
parent::offsetUnset($key);
}
}
/**
* Exists item? (\ArrayAccess implementation).
*
* @param int index
*
* @return bool
*/
public function offsetExists($index)
{
if (!$this->isLoaded() && $this->isLoadable()) {
$this->load();
}
return parent::offsetExists($index);
}
