// 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 set literal and [b] is a map literal,
 * it's a compile error.
 * @compile-error
 * @author iarkh@unipro.ru
 */

main() {
  List list =  [1, 12, 24];
  Map map = {1: 1, "test": 1, 14: null};

  var res = {...list, ...map};
}