| /* |
| * 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 To infer the type of element: |
| * ... |
| * If element is a spreadElement with expression e1: |
| * ... |
| * If P is Set<Ps> then let S be the inferred type of e1 in context Iterable<Ps>: |
| * ... |
| * Otherwise it is an error |
| * |
| * @description Checks that otherwise it is an error |
| * @author sgrekhov@unipro.ru |
| */ |
| // SharedOptions=--enable-experiment=constant-update-2018 |
| |
| main() { |
| var s = "Let it be"; |
| var x1 = <String>{...s}; //# 01: compile-time error |
| var x2 = <String>{...?s}; //# 02: compile-time error |
| } |
