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      1 // <experimental/unordered_set> -*- C++ -*-
      2 
      3 // Copyright (C) 2015-2022 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/unordered_set
     26  *  This is a TS C++ Library header.
     27  *  @ingroup libfund-ts
     28  */
     29 
     30 #ifndef _GLIBCXX_EXPERIMENTAL_UNORDERED_SET
     31 #define _GLIBCXX_EXPERIMENTAL_UNORDERED_SET 1
     32 
     33 #pragma GCC system_header
     34 
     35 #if __cplusplus >= 201402L
     36 
     37 #include <unordered_set>
     38 #include <bits/erase_if.h>
     39 #include <experimental/memory_resource>
     40 
     41 namespace std _GLIBCXX_VISIBILITY(default)
     42 {
     43 _GLIBCXX_BEGIN_NAMESPACE_VERSION
     44 
     45 namespace experimental
     46 {
     47 inline namespace fundamentals_v2
     48 {
     49   template<typename _Key, typename _Hash, typename _CPred, typename _Alloc,
     50 	   typename _Predicate>
     51     inline void
     52     erase_if(unordered_set<_Key, _Hash, _CPred, _Alloc>& __cont,
     53 	     _Predicate __pred)
     54     {
     55       _GLIBCXX_STD_C::unordered_set<_Key, _Hash, _CPred, _Alloc>&
     56 	__ucont = __cont;
     57       std::__detail::__erase_nodes_if(__cont, __ucont, __pred);
     58     }
     59 
     60   template<typename _Key, typename _Hash, typename _CPred, typename _Alloc,
     61 	   typename _Predicate>
     62     inline void
     63     erase_if(unordered_multiset<_Key, _Hash, _CPred, _Alloc>& __cont,
     64 	     _Predicate __pred)
     65     {
     66       _GLIBCXX_STD_C::unordered_multiset<_Key, _Hash, _CPred, _Alloc>&
     67 	__ucont = __cont;
     68       std::__detail::__erase_nodes_if(__cont, __ucont, __pred);
     69     }
     70 
     71   namespace pmr {
     72     template<typename _Key, typename _Hash = hash<_Key>,
     73 	     typename _Pred = equal_to<_Key>>
     74       using unordered_set
     75       = std::unordered_set<_Key, _Hash, _Pred, polymorphic_allocator<_Key>>;
     76 
     77     template<typename _Key, typename _Hash = hash<_Key>,
     78 	     typename _Pred = equal_to<_Key>>
     79       using unordered_multiset
     80       = std::unordered_multiset<_Key, _Hash, _Pred,
     81 				polymorphic_allocator<_Key>>;
     82   } // namespace pmr
     83 
     84 } // namespace fundamentals_v2
     85 } // namespace experimental
     86 
     87 _GLIBCXX_END_NAMESPACE_VERSION
     88 } // namespace std
     89 
     90 #endif // C++14
     91 
     92 #endif // _GLIBCXX_EXPERIMENTAL_UNORDERED_SET
     93