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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 library dart.pkg.collection.utils; | 5 // This code is not inlined in the test to support testing in CSP mode. |
| 6 | 6 function isUndefined(o) { return o === undefined; } |
| 7 /// A pair of values. | 7 function isNull(o) { return o === null; } |
| 8 class Pair<E, F> { | |
| 9 E first; | |
| 10 F last; | |
| 11 | |
| 12 Pair(this.first, this.last); | |
| 13 } | |
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