src/DataStructure/Interfaces/KeysInterface.php
<?php
/*
* This file is part of Chevere.
*
* (c) Rodolfo Berrios <rodolfo@chevere.org>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
declare(strict_types=1);
namespace Chevere\DataStructure\Interfaces;
/**
* Describes the component in charge of providing an interface exposing object keys.
*/
interface KeysInterface
{
/**
* Provides access to the object keys.
*
* @return string[]
*/
public function keys(): array;
}