Language/Classes/Instance_Methods/Operators/allowed_names_t05.dart

// Copyright (c) 2011, 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 The following names are allowed for user-defined operators: 
 * <, >, <=, >=, ==, -, +, /, ˜/, *, %, |, ˆ, &, <<, >>, >>>, []=, [], ˜.
 * @description Checks that operator ! cannot be defined in a user class.
 * @compile-error
 * @author iefremov
 */

class C {
  bool operator !() {}
}

main() {
  C? c = new C();
  c!;
}