| /* |
| * 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 Since the spread is unpacked and its individual elements added to |
| * the containing collection, we don't require the spread expression itself to |
| * be assignable to the collection's type. For example, this is allowed: |
| * |
| * var numbers = <num>[1, 2, 3]; |
| * var ints = <int>[...numbers]; |
| * |
| * This works because the individual elements in numbers do happen to have the |
| * right type even though the list that contains them does not. As long as the |
| * spread object is "spreadable" — it implements [Iterable] — there is no |
| * static error. |
| * @description Checks that static error is thrown if spread element and |
| * map type arguments are incompatible. |
| * @compile-error |
| * @author iarkh@unipro.ru |
| */ |
| // SharedOptions=--enable-experiment=constant-update-2018 |
| |
| main() { |
| Map<num, num> numbers = <num, num>{}; |
| Map<String, num> map = <String, num>{...numbers}; |
| } |
