* * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ declare(strict_types=1); namespace OCC\Basics\Interfaces; use Countable; use function count; /** * A generic implementation of the Countable interface. * * Internally it counts the values of the protected `$_data` array. * * @author Sebastian Meyer * @package Basics\Interfaces * * @api * * @template TValue of mixed * @implements Countable * @phpstan-require-implements Countable */ trait CountableTrait { /** * Holds the countable data. * * @var TValue[] * * @internal */ protected array $_data = []; /** * Count the data items. * * @return int<0, max> The number of data items * * @api */ public function count(): int { return count($this->_data); } }