| // Copyright (c) 2026, 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. |
| |
| String doSplit(String s) { |
| return s.split(',').join(';'); |
| } |
| |
| abstract class Base { |
| void format(String s, [String? p]); |
| } |
| |
| class A extends Base { |
| void format(String s, [String? p = 'a']) { |
| print('A: ${doSplit(s ?? p!)}'); |
| } |
| } |
| |
| class B extends Base { |
| final String bDefault; |
| |
| B(this.bDefault); |
| |
| void format(String s, [String? p]) { |
| print('B: ${doSplit(s + (p ?? bDefault))}'); |
| } |
| } |