OLD | NEW |
1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, 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 double fib(double n) { | 7 double fib(double n) { |
8 return n <= 1.0 ? 1.0 : fib(n-1) + fib(n-2); | 8 return n <= 1.0 ? 1.0 : fib(n - 1) + fib(n - 2); |
9 } | 9 } |
10 | 10 |
11 main() { | 11 main() { |
12 // Compute the same value in a way that won't be optimized away so the results | 12 // Compute the same value in a way that won't be optimized away so the results |
13 // are different objects in memory. | 13 // are different objects in memory. |
14 var a = fib(5.0) + 1.0; | 14 var a = fib(5.0) + 1.0; |
15 var b = fib(4.0) + 4.0; | 15 var b = fib(4.0) + 4.0; |
16 | 16 |
17 Expect.isTrue(identical(a, b)); | 17 Expect.isTrue(identical(a, b)); |
18 Expect.equals(identityHashCode(a), identityHashCode(b)); | 18 Expect.equals(identityHashCode(a), identityHashCode(b)); |
19 Expect.equals(a, b); | 19 Expect.equals(a, b); |
20 Expect.equals(a.hashCode, b.hashCode); | 20 Expect.equals(a.hashCode, b.hashCode); |
21 } | 21 } |
OLD | NEW |