1: <?php
2:
3: declare(strict_types=1);
4:
5: /**
6: * This file is part of the Nexus framework.
7: *
8: * (c) John Paul E. Balandan, CPA <paulbalandan@gmail.com>
9: *
10: * For the full copyright and license information, please view
11: * the LICENSE file that was distributed with this source code.
12: */
13:
14: namespace Nexus\Collection\Operation;
15:
16: use Nexus\Collection\CollectionInterface;
17:
18: /**
19: * @template TKey
20: * @template T
21: */
22: interface Map
23: {
24: /**
25: * Returns a new collection consisting of items transformed by applying
26: * the mapping function `$predicate`.
27: *
28: * Only the values are passed to the closure. If you want to pass only
29: * the keys, you need to use `CollectionInterface::mapKeys()`. If you
30: * want both keys and values, you need `CollectionInterface::mapWithKey()`.
31: *
32: * @template U
33: *
34: * @param (\Closure(T): U) $predicate
35: *
36: * @return CollectionInterface<TKey, U>
37: */
38: public function map(\Closure $predicate): CollectionInterface;
39: }
40: