| /* |
| * 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 like: |
| * { ...a, ...b } |
| * Is syntactically parsed as [mapOrSetLiteral]. To determine whether it |
| * actually is a map or set, the surrounding context is used. Given an |
| * [mapOrSetLiteral] with context type [C]: |
| * |
| * If [Set<Null>] is assignable to [C], and [Map<Null, Null>] is not |
| * assignable to [C], then the collection is a set literal. |
| * |
| * Otherwise, it is a map literal. |
| * |
| * In other words, if it can only be a set, it is. Otherwise, it's a map. |
| * @description Checks that if [a] is a map literal and [b] is a set literal, |
| * it's a compile error. |
| * @compile-error |
| * @author iarkh@unipro.ru |
| */ |
| // SharedOptions=--enable-experiment=constant-update-2018 |
| |
| main() { |
| List list = [1, 12, 24]; |
| Map map = {1: 1, "test": 1, 14: null}; |
| |
| var res = {...map, ...list}; |
| } |
