| // { dg-options "-std=gnu++2a" } |
| // { dg-do run { target c++2a } } |
| |
| // Copyright (C) 2018-2021 Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the |
| // terms of the GNU General Public License as published by the |
| // Free Software Foundation; either version 3, or (at your option) |
| // any later version. |
| |
| // This library is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| |
| // You should have received a copy of the GNU General Public License along |
| // with this library; see the file COPYING3. If not see |
| // <http://www.gnu.org/licenses/>. |
| |
| #include <string> |
| #include <testsuite_hooks.h> |
| |
| #ifndef __cpp_lib_erase_if |
| # error "Feature-test macro for erase_if missing in <string>" |
| #elif __cpp_lib_erase_if < 202002 |
| # error "Feature-test macro for erase_if has wrong value in <string>" |
| #endif |
| |
| void |
| test01() |
| { |
| auto is_vowel = [](const char c) |
| { |
| return c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u'; |
| }; |
| |
| std::string str("cute fluffy kittens"); |
| auto num = std::erase_if(str, is_vowel); |
| VERIFY( str == "ct flffy kttns" ); |
| VERIFY( num == 5 ); |
| } |
| |
| void |
| test02() |
| { |
| std::string str = "cute fluffy kittens"; |
| auto num = std::erase(str, 'f'); |
| VERIFY( str == "cute luy kittens" ); |
| VERIFY( num == 3 ); |
| num = std::erase(str, 'z'); |
| VERIFY( str == "cute luy kittens" ); |
| VERIFY( num == 0 ); |
| } |
| |
| int |
| main() |
| { |
| test01(); |
| test02(); |
| |
| return 0; |
| } |