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The C and C++ Include Header Files
cat -n /usr/include/c++/15/forward_list
1 // <forward_list> -*- C++ -*- 2 3 // Copyright (C) 2008-2025 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/forward_list 26 * This is a Standard C++ Library header. 27 */ 28 29 #ifndef _GLIBCXX_FORWARD_LIST 30 #define _GLIBCXX_FORWARD_LIST 1 31 32 #ifdef _GLIBCXX_SYSHDR 33 #pragma GCC system_header 34 #endif 35 36 #include <bits/requires_hosted.h> // containers 37 38 #if __cplusplus < 201103L 39 # include <bits/c++0x_warning.h> 40 #else 41 42 #include <bits/forward_list.h> 43 #include <bits/range_access.h> 44 #include <bits/forward_list.tcc> 45 46 #ifdef _GLIBCXX_DEBUG 47 # include <debug/forward_list> 48 #endif 49 50 #define __glibcxx_want_algorithm_default_value_type 51 #define __glibcxx_want_allocator_traits_is_always_equal 52 #define __glibcxx_want_containers_ranges 53 #define __glibcxx_want_erase_if 54 #define __glibcxx_want_incomplete_container_elements 55 #define __glibcxx_want_list_remove_return_type 56 #define __glibcxx_want_nonmember_container_access 57 #include <bits/version.h> 58 59 #if __cplusplus >= 201703L 60 #include <bits/memory_resource.h> 61 namespace std _GLIBCXX_VISIBILITY(default) 62 { 63 _GLIBCXX_BEGIN_NAMESPACE_VERSION 64 namespace pmr 65 { 66 template<typename _Tp> 67 using forward_list = std::forward_list<_Tp, polymorphic_allocator<_Tp>>; 68 } // namespace pmr 69 _GLIBCXX_END_NAMESPACE_VERSION 70 } // namespace std 71 #endif // C++17 72 73 #ifdef __cpp_lib_erase_if // C++ >= 20 && HOSTED 74 namespace std _GLIBCXX_VISIBILITY(default) 75 { 76 _GLIBCXX_BEGIN_NAMESPACE_VERSION 77 template<typename _Tp, typename _Alloc, typename _Predicate> 78 inline typename forward_list<_Tp, _Alloc>::size_type 79 erase_if(forward_list<_Tp, _Alloc>& __cont, _Predicate __pred) 80 { return __cont.remove_if(__pred); } 81 82 template<typename _Tp, typename _Alloc, 83 typename _Up _GLIBCXX26_DEF_VAL_T(_Tp)> 84 inline typename forward_list<_Tp, _Alloc>::size_type 85 erase(forward_list<_Tp, _Alloc>& __cont, const _Up& __value) 86 { 87 // _GLIBCXX_RESOLVE_LIB_DEFECTS 88 // 4135. helper lambda of std::erase for list should specify return type 89 return std::erase_if(__cont, [&](const auto& __elem) -> bool { 90 return __elem == __value; 91 }); 92 } 93 _GLIBCXX_END_NAMESPACE_VERSION 94 } // namespace std 95 #endif // __cpp_lib_erase_if 96 97 #endif // C++11 98 99 #endif // _GLIBCXX_FORWARD_LIST
