enum Topping { Cheese, Pepperoni, Peppers, Pineapple }
enum Menu { Pizza(Topping), Calzone(Topping) }

let item = Calzone(Peppers)

match (item) {
  Calzone(topping) => {
    if (checkSpecials(topping)) {
      print("These are half off this week.")
    } else {
      print("No current specials.")
    }
  },
  _ => print("No current specials.")
}