That'd be a class in most (OOP) languages class Ranged { value: Int min: Int max: Int fn init(min: Int, value: Int, max: Int) { self.min = min self.max = max self.value = clamp(min, value, max) } fn set(new: Int) { self.value = clamp(self.min, new, self.max) } } let health = new Ranged(0, 100, 100) health.set(health - damage) // damage is 120 from some far away code // Ranged doesn't let it become -20