Dart 5. Enum & Switch Case

readme.md

Dart 5. Enum & Switch Case

Created with <3 with dartpad.dev.

main.dart

void main() {
  var spacecraft = Spacecraft("Roket 101", type: SpacecraftType.lander, launched: DateTime.tryParse("2022-01-02"));
  spacecraft.launchDate = "2021-01-02";
  spacecraft.describe();
}

enum SpacecraftType {
  flyby,
  orbitter,
  lander,
  commNav
}

class Spacecraft {
  // properties
  String name;
  DateTime? launched;
  SpacecraftType type;
  
  // getter
  int? get launchYear => launched?.year;
  String get spacecraftType {
    switch (type) {
      case SpacecraftType.flyby: return "Flyby";
      case SpacecraftType.orbitter: return "Orbitter";
      default: return "Unknown";
    }
  }
  
  // setter
  set launchDate(String date) {
    launched = DateTime.tryParse(date);
  }
  
  // constructor
  Spacecraft(this.name, {required this.type, this.launched}) {
    // di sini inisialisasi
  }
  
  //method
  void describe() {
    print('$spacecraftType spacecraft "$name" ${launched == null
          ? "belum meroket"
          : "sudah meroket pada $launchYear"}');
  }
}