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<?php
/**
* This file is part of the Nette Framework (https://nette.org)
* Copyright (c) 2004 David Grudl (https://davidgrudl.com)
*/
namespace Nette\Iterators;
use Nette;
/**
* Applies the callback to the elements of the inner iterator.
*/
class Mapper extends \IteratorIterator
{
/** @var callable */
private $callback;
public function __construct(\Traversable $iterator, callable $callback)
{
parent::__construct($iterator);
$this->callback = $callback;
}
public function current()
{
return call_user_func($this->callback, parent::current(), parent::key());
}
}
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