| /* |
| * Copyright (c) 2019, 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 Torn off extension methods are never equal unless they are |
| * identical. |
| * |
| * @description Check that a static extension method can be torn off like an |
| * instance method. |
| * @author sgrekhov@unipro.ru |
| */ |
| // SharedOptions=--enable-experiment=extension-methods |
| import "../../Utils/expect.dart"; |
| |
| extension ExtendedList on List { |
| int foo<T>(T x) => x.toString().length; |
| } |
| |
| main() { |
| List list = [1, 2, 3]; |
| int Function(int) func1 = list.foo; |
| int Function(int) func2 = list.foo; |
| |
| Expect.isFalse(func1 == func2); |
| Expect.isTrue(func1 == func1); |
| } |