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The C and C++ Include Header Files
cat -n /usr/include/c++/15/unordered_map
1 // <unordered_map> -*- C++ -*- 2 3 // Copyright (C) 2007-2025 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/unordered_map 26 * This is a Standard C++ Library header. 27 */ 28 29 #ifndef _GLIBCXX_UNORDERED_MAP 30 #define _GLIBCXX_UNORDERED_MAP 1 31 32 #ifdef _GLIBCXX_SYSHDR 33 #pragma GCC system_header 34 #endif 35 36 #include <bits/requires_hosted.h> // container 37 38 #if __cplusplus < 201103L 39 # include <bits/c++0x_warning.h> 40 #else 41 42 #include <initializer_list> 43 #include <bits/unordered_map.h> 44 #include <bits/range_access.h> 45 #include <bits/erase_if.h> 46 47 #ifdef _GLIBCXX_DEBUG 48 # include <debug/unordered_map> 49 #endif 50 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_generic_unordered_lookup 55 #define __glibcxx_want_node_extract 56 #define __glibcxx_want_nonmember_container_access 57 #define __glibcxx_want_unordered_map_try_emplace 58 #define __glibcxx_want_tuple_like 59 #include <bits/version.h> 60 61 #if __cplusplus >= 201703L 62 #include <bits/memory_resource.h> 63 namespace std _GLIBCXX_VISIBILITY(default) 64 { 65 _GLIBCXX_BEGIN_NAMESPACE_VERSION 66 namespace pmr 67 { 68 template<typename _Key, typename _Tp, typename _Hash = std::hash<_Key>, 69 typename _Pred = std::equal_to<_Key>> 70 using unordered_map 71 = std::unordered_map<_Key, _Tp, _Hash, _Pred, 72 polymorphic_allocator<pair<const _Key, _Tp>>>; 73 template<typename _Key, typename _Tp, typename _Hash = std::hash<_Key>, 74 typename _Pred = std::equal_to<_Key>> 75 using unordered_multimap 76 = std::unordered_multimap<_Key, _Tp, _Hash, _Pred, 77 polymorphic_allocator<pair<const _Key, _Tp>>>; 78 } // namespace pmr 79 _GLIBCXX_END_NAMESPACE_VERSION 80 } // namespace std 81 #endif // C++17 82 83 #if __cplusplus > 201703L 84 namespace std _GLIBCXX_VISIBILITY(default) 85 { 86 _GLIBCXX_BEGIN_NAMESPACE_VERSION 87 template<typename _Key, typename _Tp, typename _Hash, typename _CPred, 88 typename _Alloc, typename _Predicate> 89 inline typename unordered_map<_Key, _Tp, _Hash, _CPred, _Alloc>::size_type 90 erase_if(unordered_map<_Key, _Tp, _Hash, _CPred, _Alloc>& __cont, 91 _Predicate __pred) 92 { 93 _GLIBCXX_STD_C::unordered_map<_Key, _Tp, _Hash, _CPred, _Alloc>& 94 __ucont = __cont; 95 return __detail::__erase_nodes_if(__cont, __ucont, __pred); 96 } 97 98 template<typename _Key, typename _Tp, typename _Hash, typename _CPred, 99 typename _Alloc, typename _Predicate> 100 inline typename unordered_multimap<_Key, _Tp, _Hash, _CPred, _Alloc>:: 101 size_type 102 erase_if(unordered_multimap<_Key, _Tp, _Hash, _CPred, _Alloc>& __cont, 103 _Predicate __pred) 104 { 105 _GLIBCXX_STD_C::unordered_multimap<_Key, _Tp, _Hash, _CPred, _Alloc>& 106 __ucont = __cont; 107 return __detail::__erase_nodes_if(__cont, __ucont, __pred); 108 } 109 _GLIBCXX_END_NAMESPACE_VERSION 110 } // namespace std 111 #endif // C++20 112 113 #endif // C++11 114 115 #endif // _GLIBCXX_UNORDERED_MAP
