main() {
	c := new(Circle) {
		center: new(Point){x: 1, y: 2},
		radius: 3,
	}

	assert c.center.x == 1
	assert c.center.y == 2
	assert c.radius == 3
	delete(c.center)
	delete(c)
}

Circle {
	center !*Point
	radius int
}

Point {
	x int
	y int
}