//
// pointers are awesome
//

class row {
	group @ my_group;
	"test" => string text;
	
	fun void set_text(string t) {
		t => text;
	}
	
	fun void set_group(group g) {
		g @=> my_group;
	}
	
	fun void activate() {
		my_group.set_active(this);
		<<< text, "activate" >>>;
	}
	
	fun void deactivate() {
		<<< text, "deactivate" >>>;
	}
}

class group {
	row @ active;
	
	fun void set_active(row n) {
		if( active != NULL ) {
			active.deactivate();
		}
		
		n @=> active;
	}
}

group awesome;
row row1;
row row2;

row1.set_text("row1");
row2.set_text("row2");

row1.set_group(awesome);
row2.set_group(awesome);

row1.activate();
<<< "", "" >>>;
row2.activate();
<<< "", "" >>>;
row1.activate();