*
* 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);
}
}