| // Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file | |
| // for details. All rights reserved. Use of this source code is governed by a | |
| // BSD-style license that can be found in the LICENSE file. | |
| // A value class will automatically create an empty constructor if there is none yet | |
| import 'value_class_support_lib.dart'; | |
| @valueClass | |
| class Animal { | |
| final int numberOfLegs; | |
| } | |
| main() { | |
| var cat = Animal(numberOfLegs: 4); | |
| } |