Where Online Learning is simpler!

The C and C++ Include Header Files

/usr/include/c++/11/unordered_map


$ cat -n /usr/include/c++/11/unordered_map

     1	// <unordered_map> -*- C++ -*-
     2	
     3	// Copyright (C) 2007-2021 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	#if __cplusplus < 201103L
    35	# include <bits/c++0x_warning.h>
    36	#else
    37	
    38	#include <type_traits>
    39	#include <initializer_list>
    40	#include <bits/allocator.h>
    41	#include <ext/alloc_traits.h>
    42	#include <ext/aligned_buffer.h>
    43	#include <bits/stl_pair.h>
    44	#include <bits/stl_function.h> // equal_to, _Identity, _Select1st
    45	#include <bits/functional_hash.h>
    46	#include <bits/hashtable.h>
    47	#include <bits/unordered_map.h>
    48	#include <bits/range_access.h>
    49	#include <bits/erase_if.h>
    50	
    51	#ifdef _GLIBCXX_DEBUG
    52	# include <debug/unordered_map>
    53	#endif
    54	
    55	#if __cplusplus >= 201703L
    56	namespace std _GLIBCXX_VISIBILITY(default)
    57	{
    58	_GLIBCXX_BEGIN_NAMESPACE_VERSION
    59	  namespace pmr
    60	  {
    61	    template<typename _Tp> class polymorphic_allocator;
    62	    template<typename _Key, typename _Tp, typename _Hash = std::hash<_Key>,
    63		     typename _Pred = std::equal_to<_Key>>
    64	      using unordered_map
    65		= std::unordered_map<_Key, _Tp, _Hash, _Pred,
    66				     polymorphic_allocator<pair<const _Key, _Tp>>>;
    67	    template<typename _Key, typename _Tp, typename _Hash = std::hash<_Key>,
    68		     typename _Pred = std::equal_to<_Key>>
    69	      using unordered_multimap
    70		= std::unordered_multimap<_Key, _Tp, _Hash, _Pred,
    71					  polymorphic_allocator<pair<const _Key, _Tp>>>;
    72	  } // namespace pmr
    73	_GLIBCXX_END_NAMESPACE_VERSION
    74	} // namespace std
    75	#endif // C++17
    76	
    77	#if __cplusplus > 201703L
    78	namespace std _GLIBCXX_VISIBILITY(default)
    79	{
    80	_GLIBCXX_BEGIN_NAMESPACE_VERSION
    81	  template<typename _Key, typename _Tp, typename _Hash, typename _CPred,
    82		   typename _Alloc, typename _Predicate>
    83	    inline typename unordered_map<_Key, _Tp, _Hash, _CPred, _Alloc>::size_type
    84	    erase_if(unordered_map<_Key, _Tp, _Hash, _CPred, _Alloc>& __cont,
    85		     _Predicate __pred)
    86	    { return __detail::__erase_nodes_if(__cont, __pred); }
    87	
    88	  template<typename _Key, typename _Tp, typename _Hash, typename _CPred,
    89		   typename _Alloc, typename _Predicate>
    90	    inline typename unordered_multimap<_Key, _Tp, _Hash, _CPred, _Alloc>::
    91			    size_type
    92	    erase_if(unordered_multimap<_Key, _Tp, _Hash, _CPred, _Alloc>& __cont,
    93		     _Predicate __pred)
    94	    { return __detail::__erase_nodes_if(__cont, __pred); }
    95	_GLIBCXX_END_NAMESPACE_VERSION
    96	} // namespace std
    97	#endif // C++20
    98	
    99	#endif // C++11
   100	
   101	#endif // _GLIBCXX_UNORDERED_MAP