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The C and C++ Include Header Files
cat -n /usr/include/c++/15/string
1 // Components for manipulating sequences of characters -*- C++ -*- 2 3 // Copyright (C) 1997-2025 Free Software Foundation, Inc. 4 // 5 // This file is part of the GNU ISO C++ Library. This library is free 6 // software; you can redistribute it and/or modify it under the 7 // terms of the GNU General Public License as published by the 8 // Free Software Foundation; either version 3, or (at your option) 9 // any later version. 10 11 // This library is distributed in the hope that it will be useful, 12 // but WITHOUT ANY WARRANTY; without even the implied warranty of 13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 // GNU General Public License for more details. 15 16 // Under Section 7 of GPL version 3, you are granted additional 17 // permissions described in the GCC Runtime Library Exception, version 18 // 3.1, as published by the Free Software Foundation. 19 20 // You should have received a copy of the GNU General Public License and 21 // a copy of the GCC Runtime Library Exception along with this program; 22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 23 // <http://www.gnu.org/licenses/>. 24 25 /** @file include/string 26 * This is a Standard C++ Library header. 27 */ 28 29 // 30 // ISO C++ 14882: 21 Strings library 31 // 32 33 #ifndef _GLIBCXX_STRING 34 #define _GLIBCXX_STRING 1 35 36 #ifdef _GLIBCXX_SYSHDR 37 #pragma GCC system_header 38 #endif 39 40 #include <bits/requires_hosted.h> // containers 41 42 #include <bits/c++config.h> 43 #include <bits/stringfwd.h> 44 #include <bits/char_traits.h> 45 #include <bits/allocator.h> 46 #include <bits/cpp_type_traits.h> 47 #include <bits/localefwd.h> // For operators >>, <<, and getline. 48 #include <bits/ostream_insert.h> 49 #include <bits/stl_iterator_base_funcs.h> 50 #include <bits/stl_iterator.h> 51 #include <bits/stl_function.h> // For less 52 #include <ext/numeric_traits.h> 53 #include <bits/stl_algobase.h> 54 #include <bits/refwrap.h> 55 #include <bits/range_access.h> 56 #include <bits/basic_string.h> 57 #include <bits/basic_string.tcc> 58 59 #define __glibcxx_want_algorithm_default_value_type 60 #define __glibcxx_want_allocator_traits_is_always_equal 61 #define __glibcxx_want_constexpr_char_traits 62 #define __glibcxx_want_constexpr_string 63 #define __glibcxx_want_containers_ranges 64 #define __glibcxx_want_erase_if 65 #define __glibcxx_want_nonmember_container_access 66 #define __glibcxx_want_string_resize_and_overwrite 67 #define __glibcxx_want_string_udls 68 #define __glibcxx_want_to_string 69 #include <bits/version.h> 70 71 #if __cplusplus >= 201703L && _GLIBCXX_USE_CXX11_ABI 72 #include <bits/memory_resource.h> 73 namespace std _GLIBCXX_VISIBILITY(default) 74 { 75 _GLIBCXX_BEGIN_NAMESPACE_VERSION 76 namespace pmr { 77 template<typename _CharT, typename _Traits = char_traits<_CharT>> 78 using basic_string = std::basic_string<_CharT, _Traits, 79 polymorphic_allocator<_CharT>>; 80 using string = basic_string<char>; 81 #ifdef _GLIBCXX_USE_CHAR8_T 82 using u8string = basic_string<char8_t>; 83 #endif 84 using u16string = basic_string<char16_t>; 85 using u32string = basic_string<char32_t>; 86 using wstring = basic_string<wchar_t>; 87 } // namespace pmr 88 _GLIBCXX_END_NAMESPACE_VERSION 89 } // namespace std 90 #endif // C++17 91 92 #ifdef __cpp_lib_erase_if // C++ >= 20 && HOSTED 93 namespace std _GLIBCXX_VISIBILITY(default) 94 { 95 _GLIBCXX_BEGIN_NAMESPACE_VERSION 96 97 template<typename _CharT, typename _Traits, typename _Alloc, 98 typename _Predicate> 99 _GLIBCXX20_CONSTEXPR 100 inline typename basic_string<_CharT, _Traits, _Alloc>::size_type 101 erase_if(basic_string<_CharT, _Traits, _Alloc>& __cont, _Predicate __pred) 102 { 103 using namespace __gnu_cxx; 104 const auto __osz = __cont.size(); 105 const auto __end = __cont.end(); 106 auto __removed = std::__remove_if(__cont.begin(), __end, 107 __ops::__pred_iter(std::ref(__pred))); 108 __cont.erase(__removed, __end); 109 return __osz - __cont.size(); 110 } 111 112 template<typename _CharT, typename _Traits, typename _Alloc, 113 typename _Up _GLIBCXX26_DEF_VAL_T(_CharT)> 114 _GLIBCXX20_CONSTEXPR 115 inline typename basic_string<_CharT, _Traits, _Alloc>::size_type 116 erase(basic_string<_CharT, _Traits, _Alloc>& __cont, const _Up& __value) 117 { 118 using namespace __gnu_cxx; 119 const auto __osz = __cont.size(); 120 const auto __end = __cont.end(); 121 auto __removed = std::__remove_if(__cont.begin(), __end, 122 __ops::__iter_equals_val(__value)); 123 __cont.erase(__removed, __end); 124 return __osz - __cont.size(); 125 } 126 _GLIBCXX_END_NAMESPACE_VERSION 127 } // namespace std 128 #endif // __cpp_lib_erase_if 129 130 #endif /* _GLIBCXX_STRING */
