| // Copyright (c) 2011, 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. |
|
|
| /**
|
| * @assertion It is a compile-time error for any type other than the types
|
| * int and double to attempt to extend, mix in or implement num.
|
| * @description Checks that a user-defined interface can not extend num.
|
| * @compile-error
|
| * @author iefremov
|
| */
|
|
|
| abstract class A extends num {}
|
|
|
| class B implements A {}
|
|
|
| main() {
|
| new B();
|
| }
|
