/**
* @param $value
* @return Sequence
*/
public function delete($value) : Sequence
{
$values = $this->values;
$pos = array_search($value, $values);
unset($values[$pos]);
return Sequence::sequenceFromPHPArray($values);
}
/**
* @param mixed $value
* @return bool
*/
public function matches($value) : bool
{
$this->a = $this->a->appendTo($value * $value);
return true;
}