6e3dd211ca
* include/bits/erase_if.h [__cplusplus > 201703L] (__cpp_lib_erase_if): Only define for C++2a. * include/std/iterator [__cplusplus >= 201402L && !_GLIBCXX_DEBUG] (__cpp_lib_null_iterators): Define. * include/std/version [__cplusplus >= 201402L && !_GLIBCXX_DEBUG] (__cpp_lib_null_iterators): Define. [__cpp_impl_destroying_delete] (__cpp_lib_destroying_delete): Define. From-SVN: r267937
73 lines
2.0 KiB
C++
73 lines
2.0 KiB
C++
// <bits/erase_if.h> -*- C++ -*-
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// Copyright (C) 2015-2019 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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/** @file bits/erase_if.h
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* This is an internal header file, included by other library headers.
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* Do not attempt to use it directly.
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*/
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#ifndef _GLIBCXX_ERASE_IF_H
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#define _GLIBCXX_ERASE_IF_H 1
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#pragma GCC system_header
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#if __cplusplus >= 201402L
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namespace std
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{
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_GLIBCXX_BEGIN_NAMESPACE_VERSION
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#if __cplusplus > 201703L
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# define __cpp_lib_erase_if 201900L
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#endif
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namespace __detail
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{
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template<typename _Container, typename _Predicate>
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typename _Container::size_type
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__erase_nodes_if(_Container& __cont, _Predicate __pred)
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{
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typename _Container::size_type __num = 0;
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for (auto __iter = __cont.begin(), __last = __cont.end();
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__iter != __last;)
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{
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if (__pred(*__iter))
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{
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__iter = __cont.erase(__iter);
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++__num;
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}
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else
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++__iter;
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}
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return __num;
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}
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} // namespace __detail
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_GLIBCXX_END_NAMESPACE_VERSION
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} // namespace std
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#endif // C++14
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#endif // _GLIBCXX_ERASE_IF_H
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