Bob Nystrom
edee53f93d
What is dead may never die. Change-Id: I80ef766b8ce2b6e1416df8e1f9b91fb74169dc79 Reviewed-on: https://dart-review.googlesource.com/7483 Reviewed-by: William Hesse <whesse@google.com>
22 lines
672 B
Dart
22 lines
672 B
Dart
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import "package:expect/expect.dart";
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double fib(double n) {
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return n <= 1.0 ? 1.0 : fib(n - 1) + fib(n - 2);
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}
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main() {
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// Compute the same value in a way that won't be optimized away so the results
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// are different objects in memory.
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var a = fib(5.0) + 1.0;
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var b = fib(4.0) + 4.0;
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Expect.isTrue(identical(a, b));
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Expect.equals(identityHashCode(a), identityHashCode(b));
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Expect.equals(a, b);
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Expect.equals(a.hashCode, b.hashCode);
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}
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