class ID extends String {
	static var base : String = Math.random() + ":";
	static var counter : Int = 0;
		
	public var id (default, null) : ID;
	
	public function new ( ?s : String ) {
		super( base + counter++ );
		id = this;
	}
	
	public function toString() : String {
		return id;
	}
}