mundanity / collection

     * {@inheritdoc}

     *

     */

    public function diff(CollectionInterface ...$collection)

    {

        $diffs = array_map(function($item) {

            return $item->toArray();

        }, $collection);

        $func = ($this instanceof KeyedCollection) ? 'array_diff_assoc' : 'array_diff';

        $data = $func($this->data, ...$diffs);

        return new static($data);

    }

    /**

     * {@inheritdoc}

     *

     */

    public function intersect(CollectionInterface ...$collection)

    {

        $intersections = array_map(function($item) {

            return $item->toArray();

        }, $collection);

        $func = ($this instanceof KeyedCollection) ? 'array_intersect_assoc' : 'array_intersect';

        $data = $func($this->data, ...$intersections);

        return new static($data);

    }

}