1: <?php
2:
3: /**
4: * This file is part of the Nette Framework (https://nette.org)
5: * Copyright (c) 2004 David Grudl (http://davidgrudl.com)
6: */
7:
8: namespace Nette\Iterators;
9:
10: use Nette;
11:
12:
13: /**
14: * Applies the callback to the elements of the inner iterator.
15: *
16: * @author David Grudl
17: */
18: class Mapper extends \IteratorIterator
19: {
20: /** @var callable */
21: private $callback;
22:
23:
24: public function __construct(\Traversable $iterator, $callback)
25: {
26: parent::__construct($iterator);
27: $this->callback = new Nette\Callback($callback);
28: }
29:
30:
31: public function current()
32: {
33: return $this->callback->invoke(parent::current(), parent::key());
34: }
35:
36: }
37: