Language/Classes/Instance_Methods/Operators/arity_1_t06.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 if the arity of a user-declared 
/// operator with one of the names:
/// <, >, <=, >=, ==, -, +,  ̃/, /, *, %, |, ˆ, &, <<, >>, >>>, [] is not 1.
/// @description Checks that a compile-time error is produced if a user-defined
/// operator - specifies two parameters.
/// @compile-error
/// @author vasya


class C {
  operator -(var val, var val2) {}
}

main() {
  new C() - new C();
}