button b;
class button{
	void delegate() operation;
}
class stuffies{
	int i;
	void set(){
		int i = 1;
		b = new button();
		b.operation = {i++;}
	}
	void output(){
		writef(i);
	}
}
void action(){
	b.operation();
}
void main(){
	stuffies s = new stuffies();
	s.set();
	action();
	s.output();
}