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The C and C++ Include Header Files

cat -n /usr/include/c++/15/experimental/deque

     1	// <experimental/deque> -*- C++ -*-
     2	
     3	// Copyright (C) 2015-2025 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 experimental/deque
    26	 *  This is a TS C++ Library header.
    27	 *  @ingroup libfund-ts
    28	 */
    29	
    30	#ifndef _GLIBCXX_EXPERIMENTAL_DEQUE
    31	#define _GLIBCXX_EXPERIMENTAL_DEQUE 1
    32	
    33	#ifdef _GLIBCXX_SYSHDR
    34	#pragma GCC system_header
    35	#endif
    36	
    37	#include <bits/requires_hosted.h> // experimental is currently omitted
    38	
    39	#if __cplusplus >= 201402L
    40	
    41	#include <deque>
    42	#include <algorithm>
    43	#include <experimental/memory_resource>
    44	
    45	namespace std _GLIBCXX_VISIBILITY(default)
    46	{
    47	_GLIBCXX_BEGIN_NAMESPACE_VERSION
    48	
    49	namespace experimental
    50	{
    51	inline namespace fundamentals_v2
    52	{
    53	  template<typename _Tp, typename _Alloc, typename _Predicate>
    54	    inline void
    55	    erase_if(deque<_Tp, _Alloc>& __cont, _Predicate __pred)
    56	    {
    57	      __cont.erase(std::remove_if(__cont.begin(), __cont.end(), __pred),
    58			   __cont.end());
    59	    }
    60	
    61	  template<typename _Tp, typename _Alloc, typename _Up>
    62	    inline void
    63	    erase(deque<_Tp, _Alloc>& __cont, const _Up& __value)
    64	    {
    65	      __cont.erase(std::remove(__cont.begin(), __cont.end(), __value),
    66			   __cont.end());
    67	    }
    68	
    69	  namespace pmr {
    70	    template<typename _Tp>
    71	      using deque = std::deque<_Tp, polymorphic_allocator<_Tp>>;
    72	
    73	  } // namespace pmr
    74	} // namespace fundamentals_v2
    75	} // namespace experimental
    76	_GLIBCXX_END_NAMESPACE_VERSION
    77	} // namespace std
    78	
    79	#endif // C++14
    80	
    81	#endif // _GLIBCXX_EXPERIMENTAL_DEQUE