Singleton pattern

gistfile1.as

package ${packagename}
{

    class ${Singleton} 
    {

        private static var _instance:${Singleton};

        public function ${Singleton}(enforcer:SingletonEnforcer)
        {
        }

        public static function getInstance():${Singleton}
        {
             if(_instance == null)
             {
                 _instance = new ${Singleton}(new SingletonEnforcer());
             }
             return _instance;
        }
    }
}
class SingletonEnforcer{}