SingletonTrait.php

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<?php namespace ILIAS\GlobalScreen;
 
trait SingletonTrait
{
 
    private static $services = [];
 
 
    private function get(string $class_name)
    {
        if (!isset(self::$services[$class_name])) {
            self::$services[$class_name] = new $class_name();
        }
 
        return self::$services[$class_name];
    }
 
 
    private function getWithArgument(string $class_name, $argument)
    {
        if (!isset(self::$services[$class_name])) {
            self::$services[$class_name] = new $class_name($argument);
        }
 
        return self::$services[$class_name];
    }
}