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a62b871d | 1 | // { dg-options "-std=gnu++2a" } |
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2 | // { dg-do run { target c++2a } } |
3 | ||
99dee823 | 4 | // Copyright (C) 2018-2021 Free Software Foundation, Inc. |
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5 | // |
6 | // This file is part of the GNU ISO C++ Library. This library is free | |
7 | // software; you can redistribute it and/or modify it under the | |
8 | // terms of the GNU General Public License as published by the | |
9 | // Free Software Foundation; either version 3, or (at your option) | |
10 | // any later version. | |
11 | ||
12 | // This library is distributed in the hope that it will be useful, | |
13 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | // GNU General Public License for more details. | |
16 | ||
17 | // You should have received a copy of the GNU General Public License along | |
18 | // with this library; see the file COPYING3. If not see | |
19 | // <http://www.gnu.org/licenses/>. | |
20 | ||
21 | #include <string> | |
22 | #include <testsuite_hooks.h> | |
23 | ||
0fe9eaaa JW |
24 | #ifndef __cpp_lib_erase_if |
25 | # error "Feature-test macro for erase_if missing in <string>" | |
26 | #elif __cpp_lib_erase_if < 202002 | |
27 | # error "Feature-test macro for erase_if has wrong value in <string>" | |
28 | #endif | |
29 | ||
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30 | void |
31 | test01() | |
32 | { | |
33 | auto is_vowel = [](const char c) | |
34 | { | |
35 | return c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u'; | |
36 | }; | |
37 | ||
38 | std::string str("cute fluffy kittens"); | |
0b44b4b8 | 39 | auto num = std::erase_if(str, is_vowel); |
188588e4 | 40 | VERIFY( str == "ct flffy kttns" ); |
0b44b4b8 | 41 | VERIFY( num == 5 ); |
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42 | } |
43 | ||
44 | void | |
45 | test02() | |
46 | { | |
47 | std::string str = "cute fluffy kittens"; | |
0b44b4b8 | 48 | auto num = std::erase(str, 'f'); |
188588e4 | 49 | VERIFY( str == "cute luy kittens" ); |
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50 | VERIFY( num == 3 ); |
51 | num = std::erase(str, 'z'); | |
188588e4 | 52 | VERIFY( str == "cute luy kittens" ); |
0b44b4b8 | 53 | VERIFY( num == 0 ); |
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54 | } |
55 | ||
56 | int | |
57 | main() | |
58 | { | |
59 | test01(); | |
60 | test02(); | |
61 | ||
62 | return 0; | |
63 | } |