coffee_named_constructor.dart

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

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

  // named constructor
  Coffee.iceAmericano(this.beanType, this.waterAmount, [this.syrup])
      : hot = false; // initializer list

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

void main() {
  var coffee = Coffee.iceAmericano('콜롬비아 수프리모', 300);
  print(coffee.hot); // false
}