2024-02-12 17:21:57 +01:00
|
|
|
<?php
|
|
|
|
|
|
|
|
/**
|
|
|
|
* PHP Basics
|
|
|
|
*
|
|
|
|
* Copyright (C) 2024 Sebastian Meyer <sebastian.meyer@opencultureconsulting.com>
|
|
|
|
*
|
|
|
|
* 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 <http://www.gnu.org/licenses/>.
|
|
|
|
*/
|
|
|
|
|
|
|
|
declare(strict_types=1);
|
|
|
|
|
|
|
|
namespace OCC\Basics\Interfaces;
|
|
|
|
|
|
|
|
use Countable;
|
|
|
|
|
2024-02-19 14:52:57 +01:00
|
|
|
use function count;
|
|
|
|
|
2024-02-12 17:21:57 +01:00
|
|
|
/**
|
|
|
|
* A generic implementation of the Countable interface.
|
|
|
|
*
|
|
|
|
* Internally it counts the values of the protected `$_data` array.
|
|
|
|
*
|
|
|
|
* @author Sebastian Meyer <sebastian.meyer@opencultureconsulting.com>
|
|
|
|
* @package Basics\Interfaces
|
|
|
|
*
|
|
|
|
* @api
|
|
|
|
*
|
|
|
|
* @template TValue of mixed
|
|
|
|
* @implements Countable<TValue>
|
|
|
|
* @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);
|
|
|
|
}
|
|
|
|
}
|