| // 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 the user-declared
|
| * operator - is not 0 or 1.
|
| * The - operator is unique in that two overloaded versions are permitted.
|
| * If the operator has no arguments, it denotes unary minus.
|
| * If it as an argument, it denotes binary subtraction.
|
| * @description Checks that a compile-time error is produced if a user-defined
|
| * operator - specifies two parameters.
|
| * @compile-error
|
| * @author kaigorodov
|
| */
|
|
|
| class C {
|
| operator -(var val, var val2) {}
|
| }
|
|
|
| main() {
|
| new C() - new C();
|
| }
|
