Pinq\Iterators\Common\Set::remove PHP Method

    public function remove($value)
    {
        $identityHash = Identity::hash($value);
        if (!isset($this->values[$identityHash]) && !array_key_exists($identityHash, $this->values)) {
            return false;
        }
        unset($this->values[$identityHash]);
        $this->length--;
        return true;
    }