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24b33dae89
Change-Id: I90bc5ff6aae8998deb3cc28b1134c60058706f01 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/150185 Auto-Submit: Bob Nystrom <rnystrom@google.com> Reviewed-by: Srujan Gaddam <srujzs@google.com> Commit-Queue: Bob Nystrom <rnystrom@google.com>
37 lines
764 B
Dart
37 lines
764 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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// VMOptions=--optimization-counter-threshold=8
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import "package:expect/expect.dart";
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main() {
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// Make instance-of polymorphic.
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isNum([]);
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isNumRaw([]);
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isNotNum([]);
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isNotInt([]);
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for (int i = 0; i < 20; i++) {
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Expect.isTrue(isNum(i));
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Expect.isTrue(isNumRaw(i));
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Expect.isFalse(isNotNum(i));
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Expect.isFalse(isNotInt(i));
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}
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}
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isNum(a) {
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return a is Comparable<num>;
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}
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isNumRaw(a) {
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return a is Comparable;
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}
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isNotNum(a) {
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return a is Comparable<String>;
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}
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isNotInt(a) {
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return a is Comparable<double>;
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}
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