56 lines
1.6 KiB
PHP
56 lines
1.6 KiB
PHP
|
<?php
|
||
|
|
|
||
|
|
// {{{ License
|
||
|
|
// This file is part of GNU social - https://www.gnu.org/software/social
|
||
|
|
//
|
||
|
|
// GNU social is free software: you can redistribute it and/or modify
|
||
|
|
// it under the terms of the GNU Affero General Public License as published by
|
||
|
|
// the Free Software Foundation, either version 3 of the License, or
|
||
|
|
// (at your option) any later version.
|
||
|
|
//
|
||
|
|
// GNU social 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 Affero General Public License for more details.
|
||
|
|
//
|
||
|
|
// You should have received a copy of the GNU Affero General Public License
|
||
|
|
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
// }}}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Functional utilities
|
||
|
|
*
|
||
|
|
* @package GNUsocial
|
||
|
|
* @category Util
|
||
|
|
*
|
||
|
|
* @author Hugo Sales <hugo@fc.up.pt>
|
||
|
|
* @copyright 2020 Free Software Foundation, Inc http://www.fsf.org
|
||
|
|
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
|
||
|
|
*/
|
||
|
|
|
||
|
|
namespace App\Util;
|
||
|
|
|
||
|
|
use Functional as F;
|
||
|
|
|
||
|
|
abstract class Functional
|
||
|
|
{
|
||
|
|
/**
|
||
|
|
* Call $func with only abs($count) arguments, taken either from the
|
||
|
|
* left or right depending on the sign
|
||
|
|
*
|
||
|
|
* @param callable $func
|
||
|
|
* @param int $count
|
||
|
|
*
|
||
|
|
* @return callable
|
||
|
|
*/
|
||
|
|
public static function arity(callable $func, int $count): callable
|
||
|
|
{
|
||
|
|
return function (...$args) use ($func, $count) {
|
||
|
|
if ($count > 0) {
|
||
|
|
return call_user_func_array($func, F\take_left($args, $count));
|
||
|
|
}
|
||
|
|
return call_user_func_array($func, F\take_right($args, -$count));
|
||
|
|
};
|
||
|
|
}
|
||
|
|
}
|