| // Copyright (c) 2018, 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. | |
| /// Explicit casts in constants are supported and treated as compile-time errors | |
| /// if they are not valid. | |
| class A { | |
| final int n; | |
| const A(dynamic input) : n = input as int; | |
| } | |
| main() { | |
| print(const A(2)); //# 01: ok | |
| print(const A('2')); //# 02: compile-time error | |
| } |