1// <bits/erase_if.h> -*- C++ -*- 
2 
3// Copyright (C) 2015-2019 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 bits/erase_if.h 
26 * This is an internal header file, included by other library headers. 
27 * Do not attempt to use it directly. 
28 */ 
29 
30#ifndef _GLIBCXX_ERASE_IF_H 
31#define _GLIBCXX_ERASE_IF_H 1 
32 
33#pragma GCC system_header 
34 
35#if __cplusplus >= 201402L 
36 
37namespace std 
38{ 
39_GLIBCXX_BEGIN_NAMESPACE_VERSION 
40 
41#if __cplusplus > 201703L 
42# define __cpp_lib_erase_if 202002L 
43#endif 
44 
45 namespace __detail 
46 { 
47 template<typename _Container, typename _Predicate> 
48 typename _Container::size_type 
49 __erase_nodes_if(_Container& __cont, _Predicate __pred) 
50 { 
51 typename _Container::size_type __num = 0; 
52 for (auto __iter = __cont.begin(), __last = __cont.end(); 
53 __iter != __last;) 
54 { 
55 if (__pred(*__iter)) 
56 { 
57 __iter = __cont.erase(__iter); 
58 ++__num; 
59 } 
60 else 
61 ++__iter; 
62 } 
63 return __num; 
64 } 
65 } // namespace __detail 
66 
67_GLIBCXX_END_NAMESPACE_VERSION 
68} // namespace std 
69 
70#endif // C++14 
71 
72#endif // _GLIBCXX_ERASE_IF_H 
73