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Issue 11361190: a === b -> identical(a, b) (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: Address comments. Created 8 years, 1 month ago
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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2012, 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 // Test of compile time constant local variables. 5 // Test of compile time constant local variables.
6 6
7 const N = 8; 7 const N = 8;
8 8
9 class ConstFoo { 9 class ConstFoo {
10 final x; 10 final x;
11 const ConstFoo(this.x); 11 const ConstFoo(this.x);
12 } 12 }
13 13
14 main() { 14 main() {
15 const MIN = 2 - 1; 15 const MIN = 2 - 1;
16 const MAX = N * 2; 16 const MAX = N * 2;
17 const MASK = (1 << (MAX - MIN + 1)) - 1; // 65535. 17 const MASK = (1 << (MAX - MIN + 1)) - 1; // 65535.
18 Expect.equals(1, MIN); 18 Expect.equals(1, MIN);
19 Expect.equals(16, MAX); 19 Expect.equals(16, MAX);
20 Expect.equals(65535, MASK); 20 Expect.equals(65535, MASK);
21 const s = 'MIN = $MIN MAX = $MAX MASK = $MASK'; 21 const s = 'MIN = $MIN MAX = $MAX MASK = $MASK';
22 Expect.isTrue(s === 'MIN = $MIN MAX = $MAX MASK = $MASK'); 22 Expect.identical(s, 'MIN = $MIN MAX = $MAX MASK = $MASK');
23 Expect.equals("MIN = 1 MAX = 16 MASK = 65535", s); 23 Expect.equals("MIN = 1 MAX = 16 MASK = 65535", s);
24 var cf1 = const ConstFoo(MASK); 24 var cf1 = const ConstFoo(MASK);
25 var cf2 = const ConstFoo(s); 25 var cf2 = const ConstFoo(s);
26 var cf3 = const ConstFoo('MIN = $MIN MAX = $MAX MASK = $MASK'); 26 var cf3 = const ConstFoo('MIN = $MIN MAX = $MAX MASK = $MASK');
27 Expect.isTrue(cf2 === cf3); 27 Expect.identical(cf2, cf3);
28 Expect.isFalse(cf2 === cf1); 28 Expect.isFalse(identical(cf2, cf1));
29 } 29 }
30 30
31 31
32 32
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