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The C and C++ Include Header Files

/usr/include/c++/13/unordered_map


$ cat -n /usr/include/c++/13/unordered_map

     1	// <unordered_map> -*- C++ -*-
     2	
     3	// Copyright (C) 2007-2023 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	#pragma GCC system_header
    33	
    34	#include <bits/requires_hosted.h> // container
    35	
    36	#if __cplusplus < 201103L
    37	# include <bits/c++0x_warning.h>
    38	#else
    39	
    40	#include <initializer_list>
    41	#include <bits/unordered_map.h>
    42	#include <bits/range_access.h>
    43	#include <bits/erase_if.h>
    44	
    45	#ifdef _GLIBCXX_DEBUG
    46	# include <debug/unordered_map>
    47	#endif
    48	
    49	#if __cplusplus >= 201703L
    50	#include <bits/memory_resource.h>
    51	namespace std _GLIBCXX_VISIBILITY(default)
    52	{
    53	_GLIBCXX_BEGIN_NAMESPACE_VERSION
    54	  namespace pmr
    55	  {
    56	    template<typename _Key, typename _Tp, typename _Hash = std::hash<_Key>,
    57		     typename _Pred = std::equal_to<_Key>>
    58	      using unordered_map
    59		= std::unordered_map<_Key, _Tp, _Hash, _Pred,
    60				     polymorphic_allocator<pair<const _Key, _Tp>>>;
    61	    template<typename _Key, typename _Tp, typename _Hash = std::hash<_Key>,
    62		     typename _Pred = std::equal_to<_Key>>
    63	      using unordered_multimap
    64		= std::unordered_multimap<_Key, _Tp, _Hash, _Pred,
    65					  polymorphic_allocator<pair<const _Key, _Tp>>>;
    66	  } // namespace pmr
    67	_GLIBCXX_END_NAMESPACE_VERSION
    68	} // namespace std
    69	#endif // C++17
    70	
    71	#if __cplusplus > 201703L
    72	namespace std _GLIBCXX_VISIBILITY(default)
    73	{
    74	_GLIBCXX_BEGIN_NAMESPACE_VERSION
    75	  template<typename _Key, typename _Tp, typename _Hash, typename _CPred,
    76		   typename _Alloc, typename _Predicate>
    77	    inline typename unordered_map<_Key, _Tp, _Hash, _CPred, _Alloc>::size_type
    78	    erase_if(unordered_map<_Key, _Tp, _Hash, _CPred, _Alloc>& __cont,
    79		     _Predicate __pred)
    80	    {
    81	      _GLIBCXX_STD_C::unordered_map<_Key, _Tp, _Hash, _CPred, _Alloc>&
    82		__ucont = __cont;
    83	      return __detail::__erase_nodes_if(__cont, __ucont, __pred);
    84	    }
    85	
    86	  template<typename _Key, typename _Tp, typename _Hash, typename _CPred,
    87		   typename _Alloc, typename _Predicate>
    88	    inline typename unordered_multimap<_Key, _Tp, _Hash, _CPred, _Alloc>::
    89			    size_type
    90	    erase_if(unordered_multimap<_Key, _Tp, _Hash, _CPred, _Alloc>& __cont,
    91		     _Predicate __pred)
    92	    {
    93	      _GLIBCXX_STD_C::unordered_multimap<_Key, _Tp, _Hash, _CPred, _Alloc>&
    94		__ucont = __cont;
    95	      return __detail::__erase_nodes_if(__cont, __ucont, __pred);
    96	    }
    97	_GLIBCXX_END_NAMESPACE_VERSION
    98	} // namespace std
    99	#endif // C++20
   100	
   101	#endif // C++11
   102	
   103	#endif // _GLIBCXX_UNORDERED_MAP