libstdc++
unordered_set
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1 // <unordered_set> -*- 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_set
26  * This is a Standard C++ Library header.
27  */
28 
29 #ifndef _GLIBCXX_UNORDERED_SET
30 #define _GLIBCXX_UNORDERED_SET 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_set.h>
48 #include <bits/range_access.h>
49 #include <bits/erase_if.h>
50 
51 #ifdef _GLIBCXX_DEBUG
52 # include <debug/unordered_set>
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 _Hash = std::hash<_Key>,
63  typename _Pred = std::equal_to<_Key>>
64  using unordered_set
65  = std::unordered_set<_Key, _Hash, _Pred,
66  polymorphic_allocator<_Key>>;
67  template<typename _Key, typename _Hash = std::hash<_Key>,
68  typename _Pred = std::equal_to<_Key>>
69  using unordered_multiset
70  = std::unordered_multiset<_Key, _Hash, _Pred,
71  polymorphic_allocator<_Key>>;
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 _Hash, typename _CPred, typename _Alloc,
82  typename _Predicate>
84  erase_if(unordered_set<_Key, _Hash, _CPred, _Alloc>& __cont,
85  _Predicate __pred)
86  { return __detail::__erase_nodes_if(__cont, __pred); }
87 
88  template<typename _Key, typename _Hash, typename _CPred, typename _Alloc,
89  typename _Predicate>
91  erase_if(unordered_multiset<_Key, _Hash, _CPred, _Alloc>& __cont,
92  _Predicate __pred)
93  { return __detail::__erase_nodes_if(__cont, __pred); }
94 _GLIBCXX_END_NAMESPACE_VERSION
95 } // namespace std
96 #endif // C++20
97 
98 #endif // C++11
99 
100 #endif // _GLIBCXX_UNORDERED_SET
ISO C++ entities toplevel namespace is std.
A standard container composed of equivalent keys (possibly containing multiple of each key value) in ...
_Hashtable::size_type size_type
Iterator-related typedefs.
A standard container composed of unique keys (containing at most one of each key value) in which the ...
Definition: unordered_set.h:98
_Hashtable::size_type size_type
Iterator-related typedefs.