Dart - sample app

main.dart

main() {
  var myCar = new Car("Cybertruck", new DateTime(2021, 01, 01));
  myCar.describe();
}

class Car {
  String model;
  DateTime productionDate;

  // Ctor: notice the syntactic sugar members' assignment
  Car(this.model, this.productionDate) {
    // Some other ctor init code here
  }

  int get productionYear =>
      productionDate?.year;
  
  void describe() {
    print('Car: $model, produced in $productionYear');
  }
}