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| 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
| 2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
| 3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
| 4 | 4 |
| 5 import "package:expect/expect.dart"; |
| 6 |
| 5 // It is a compile-time error if a named formal parameter begins with an '_' | 7 // It is a compile-time error if a named formal parameter begins with an '_' |
| 6 | 8 |
| 7 class Foo { | 9 class Foo { |
| 8 num _y; | 10 num _y; |
| 9 Foo.optional_private({this._y: 77}) {} | 11 Foo.optional_private({this._y: 77}) {} |
| 10 } | 12 } |
| 11 | 13 |
| 12 main() { | 14 main() { |
| 13 var obj; | 15 var obj; |
| 14 obj = new Foo.optional_private(_y: 222); | 16 obj = new Foo.optional_private(_y: 222); |
| 15 Expect.equals(222, obj._y); | 17 Expect.equals(222, obj._y); |
| 16 | 18 |
| 17 obj = new Foo.optional_private(); | 19 obj = new Foo.optional_private(); |
| 18 Expect.equals(77, obj._y); | 20 Expect.equals(77, obj._y); |
| 19 } | 21 } |
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