blob: b030d6e5598336b11716205daa8cdff816fe3b59 [file] [log] [blame]
* 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
dynamic str;
main() {
const String? obj = str as String?;