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| 1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2014, 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"; | 5 import "package:expect/expect.dart"; |
| 6 | 6 |
| 7 /// Returns its argument. | 7 /// Returns its argument. |
| 8 /// | 8 /// |
| 9 /// Prevents static optimizations and inlining. | 9 /// Prevents static optimizations and inlining. |
| 10 confuse(x) { | 10 confuse(x) { |
| 11 // DateTime.now() cannot be predicted statically. | 11 // DateTime.now() cannot be predicted statically. |
| 12 if (new DateTime.now() == 42) return confuse(2); | 12 if (new DateTime.now() == 42) return confuse(2); |
| 13 return x; | 13 return x; |
| 14 } | 14 } |
| 15 | 15 |
| 16 main() { | 16 main() { |
| 17 // Make sure that const maps use the == operator and not identical. The | 17 // Make sure that const maps use the == operator and not identical. The |
| 18 // specification does not explicitly require it, but otherwise ints and | 18 // specification does not explicitly require it, but otherwise ints and |
| 19 // Strings wouldn't make much sense as keys. | 19 // Strings wouldn't make much sense as keys. |
| 20 var m = const { 1: 42, "foo": 499 }; | 20 var m = const {1: 42, "foo": 499}; |
| 21 Expect.equals(42, m[confuse(1.0)]); | 21 Expect.equals(42, m[confuse(1.0)]); |
| 22 Expect.equals(499, m[confuse(new String.fromCharCodes("foo".runes))]); | 22 Expect.equals(499, m[confuse(new String.fromCharCodes("foo".runes))]); |
| 23 } | 23 } |
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