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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) 2011, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2011, 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 // Exercises compile-time string constants 5 // Exercises compile-time string constants
6 6
7 main() { 7 main() {
8 // Constant comparisons are independent of the quotes used. 8 // Constant comparisons are independent of the quotes used.
9 Expect.isTrue("abcd" === 'abcd'); 9 Expect.isTrue(identical("abcd", 'abcd'));
10 Expect.isTrue('abcd' === "abcd"); 10 Expect.isTrue(identical('abcd', "abcd"));
11 Expect.isTrue("ab\"cd" === 'ab"cd'); 11 Expect.isTrue(identical("ab\"cd", 'ab"cd'));
12 Expect.isTrue('ab\'cd' === "ab'cd"); 12 Expect.isTrue(identical('ab\'cd', "ab'cd"));
13 13
14 // String concatenation works even when quotes are different. 14 // String concatenation works even when quotes are different.
15 Expect.isTrue("abcd" === "ab" "cd"); 15 Expect.isTrue(identical("abcd", "ab" "cd"));
16 Expect.isTrue("abcd" === "ab" 'cd'); 16 Expect.isTrue(identical("abcd", "ab" 'cd'));
17 Expect.isTrue("abcd" === 'ab' 'cd'); 17 Expect.isTrue(identical("abcd", 'ab' 'cd'));
18 Expect.isTrue("abcd" === 'ab' "cd"); 18 Expect.isTrue(identical("abcd", 'ab' "cd"));
19 19
20 // Or when there are more than 2 contatenations. 20 // Or when there are more than 2 contatenations.
21 Expect.isTrue("abcd" === "a" "b" "cd"); 21 Expect.isTrue(identical("abcd", "a" "b" "cd"));
22 Expect.isTrue("abcd" === "a" "b" "c" "d"); 22 Expect.isTrue(identical("abcd", "a" "b" "c" "d"));
23 Expect.isTrue('abcd' === 'a' 'b' 'c' 'd'); 23 Expect.isTrue(identical('abcd', 'a' 'b' 'c' 'd'));
24 Expect.isTrue("abcd" === "a" "b" 'c' "d"); 24 Expect.isTrue(identical("abcd", "a" "b" 'c' "d"));
25 Expect.isTrue("abcd" === 'a' 'b' 'c' 'd'); 25 Expect.isTrue(identical("abcd", 'a' 'b' 'c' 'd'));
26 Expect.isTrue("abcd" === 'a' "b" 'c' "d"); 26 Expect.isTrue(identical("abcd", 'a' "b" 'c' "d"));
27 27
28 Expect.isTrue("a'b'cd" === "a" "'b'" 'c' "d"); 28 Expect.isTrue(identical("a'b'cd", "a" "'b'" 'c' "d"));
29 Expect.isTrue("a\"b\"cd" === "a" '"b"' 'c' "d"); 29 Expect.isTrue(identical("a\"b\"cd", "a" '"b"' 'c' "d"));
30 Expect.isTrue("a\"b\"cd" === "a" '"b"' 'c' "d"); 30 Expect.isTrue(identical("a\"b\"cd", "a" '"b"' 'c' "d"));
31 Expect.isTrue("a'b'cd" === 'a' "'b'" 'c' "d"); 31 Expect.isTrue(identical("a'b'cd", 'a' "'b'" 'c' "d"));
32 Expect.isTrue('a\'b\'cd' === "a" "'b'" 'c' "d"); 32 Expect.isTrue(identical('a\'b\'cd', "a" "'b'" 'c' "d"));
33 Expect.isTrue('a"b"cd' === 'a' '"b"' 'c' "d"); 33 Expect.isTrue(identical('a"b"cd', 'a' '"b"' 'c' "d"));
34 Expect.isTrue("a\"b\"cd" === 'a' '"b"' 'c' "d"); 34 Expect.isTrue(identical("a\"b\"cd", 'a' '"b"' 'c' "d"));
35 } 35 }
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