blog-operator-overloading-scoop1.kt

data class IceCream(val scoops: Int)
data class ScoopResult(val iceCream: IceCream?, val iceCreamTub: IceCreamTub)

class ScoopAction {

    fun scoop(iceCreamTub: IceCreamTub): ScoopResult {
        val scoops = iceCreamTub.remainingScoops
        if (scoops == 0) {
            return ScoopResult(null, iceCreamTub)
        }
        return ScoopResult(IceCream(1), IceCreamTub(scoops - 1))
    }
}