| // 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 An expression of the form [e as T] is accepted as a potentially |
| * and compile-time constant expression if [e] is potentially constant or |
| * compile-time constant, respectively, and [T] is a compile-time constant type. |
| * A compile-time constant type means any type that doesn't contain free type |
| * variables, so the type expression always resolves to the exact same type. |
| * @description Checks that an expression of the form [e as T] is not accepted |
| * and causes compile time error if [e] is not a compile-time constant and it's |
| * assigned to the [String] variable. |
| * @compile-error |
| * @author iarkh@unipro.ru |
| */ |
| |
| String str = "test"; |
| |
| main() { |
| const String obj = str as String; |
| } |
