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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 | |
7 // It is a compile-time error if a named formal parameter begins with an '_' | 5 // It is a compile-time error if a named formal parameter begins with an '_' |
8 | 6 |
9 class Foo { | 7 class Foo { |
10 num _y; | 8 num _y; |
11 Foo.optional_private({this._y: 77}) {} | 9 Foo.optional_private({this._y: 77}) {} |
12 } | 10 } |
13 | 11 |
14 main() { | 12 main() { |
15 var obj; | 13 var obj; |
16 obj = new Foo.optional_private(_y: 222); | 14 obj = new Foo.optional_private(_y: 222); |
17 Expect.equals(222, obj._y); | 15 Expect.equals(222, obj._y); |
18 | 16 |
19 obj = new Foo.optional_private(); | 17 obj = new Foo.optional_private(); |
20 Expect.equals(77, obj._y); | 18 Expect.equals(77, obj._y); |
21 } | 19 } |
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