coffee_redirect_constructor.dart

class Coffee {
  String beanType;
  int waterAmount;
  bool hot;
  Syrup? syrup;

  Coffee(this.beanType, [this.waterAmount = 40, this.hot = true, this.syrup]);

  Coffee.iceAmericano(this.beanType, this.waterAmount, [this.syrup])
      : hot = false;

  Coffee.sweetIceAmericano(String beanType)
      : this(beanType, 200, false, Syrup('Sugar', 5)); // redirect

  bool isEspresso() {
    return waterAmount <= 50;
  }
}

void main() {
  var coffee = Coffee.sweetIceAmericano('콜롬비아 수프리모');
  print(coffee.syrup?.amount); // 5
}