| // 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. |
| // VMOptions=--optimization-counter-threshold=8 |
| |
| import "package:expect/expect.dart"; |
| |
| main() { |
| // Make instance-of polymorphic. |
| isNum([]); |
| isNumRaw([]); |
| isNotNum([]); |
| isNotInt([]); |
| for (int i = 0; i < 20; i++) { |
| Expect.isTrue(isNum(i)); |
| Expect.isTrue(isNumRaw(i)); |
| Expect.isFalse(isNotNum(i)); |
| Expect.isFalse(isNotInt(i)); |
| } |
| } |
| |
| isNum(a) { |
| return a is Comparable<num>; |
| } |
| |
| isNumRaw(a) { |
| return a is Comparable; |
| } |
| |
| isNotNum(a) { |
| return a is Comparable<String>; |
| } |
| |
| isNotInt(a) { |
| return a is Comparable<double>; |
| } |