| // Copyright (c) 2013, 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. |
| |
| import "package:expect/expect.dart"; |
| |
| void main() { |
| Expect.equals('', useParameterInClosure(1)); |
| Expect.equals(43, updateParameterInClosure(1)()); |
| } |
| |
| String useParameterInClosure(arg1, {int? arg2}) { |
| if (arg1 is Map) { |
| return arg1.keys.map((key) => arg1[key]).first; |
| } else { |
| return ''; |
| } |
| } |
| |
| Function updateParameterInClosure(arg1) { |
| if (arg1 is Map) { |
| return () => arg1 = 42; |
| } else { |
| return () => arg1 = arg1 + 42; |
| } |
| } |