Singleton Pattern

What is a singleton class?

This is a class where only one instance of it can be created, so in the exemple above only one object SingletonClass will be created.

Creating a singleton class is really easy, here is the main structure :

SingletonClass { // a private static var holding the class instance private static var _oI : SingletonClass;

// the constructor is private to prevent external creation private function SingletonClass ( Void ) {}

// to retrieve your singleton object public static function getInstance( Void ) : SingletonClass { if ( _oI == undefined ) _oI = new SingletonClass; return _oI }

public function aFunction( Void ) : Void { trace( "this is a test function" ); }

}

Now when you're calling the SingletonClass.getInstance you are accessing your singleton object.

Eg you want to call the aFunction function, you're doing

SingletonClass.getInstance.aFunction

See you ...