50 lines
1.3 KiB
PHP
50 lines
1.3 KiB
PHP
<?php
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/**
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* Nextcloud - user_sql
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* Copyright (C) 2012-2018 Andreas Böhler <dev (at) aboehler (dot) at>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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namespace OCA\user_sql\HashAlgorithm\Base;
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/**
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* Singleton pattern trait.
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* @author Marcin Łojewski <dev@mlojewski.me>
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*/
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trait Singleton
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{
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private static $instance;
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final private function __construct()
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{
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$this->init();
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}
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protected function init()
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{
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}
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final public static function getInstance()
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{
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return isset(static::$instance)
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? static::$instance
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: static::$instance = new static;
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}
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final private function __clone()
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{
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}
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}
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