Language/Classes/Instance_Methods/Operators/optional_parameter_t02.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 It is a compile-time error to declare an optional parameter in an 
/// operator.
/// @description Checks that a compile-time error is produced if a user-defined
/// operator [] specifies an optional positional parameter in addition to the 
/// required one.
/// @compile-error
/// @author rodionov


class C {
  operator [](var r, [var o]) {}
}

main() {
  new C()[1];
}