John Messerly
25 lines
612 B
Dart
25 lines
612 B
Dart
// Copyright (c) 2014, 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.
|
|
|
|
import "package:expect/expect.dart";
|
|
|
|
class A {
|
|
static const b = const B();
|
|
}
|
|
|
|
class B implements A {
|
|
const B();
|
|
|
|
operator ==(o) => true; /// 00: compile-time error
|
|
}
|
|
|
|
main() {
|
|
// It is a compile-time error if the key type overrides operator ==.
|
|
var m = const { A.b: 42 };
|
|
Expect.equals(42, m[const B()]);
|
|
|
|
m = const { "foo": 99, A.b: 499 };
|
|
Expect.equals(499, m[const B()]);
|
|
}
|