1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #ifndef _LIBCPP___ALGORITHM_REMOVE_IF_H 10 #define _LIBCPP___ALGORITHM_REMOVE_IF_H 11 12 #include <__algorithm/find_if.h> 13 #include <__config> 14 #include <__utility/move.h> 15 16 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 17 # pragma GCC system_header 18 #endif 19 20 _LIBCPP_BEGIN_NAMESPACE_STD 21 22 template <class _ForwardIterator, class _Predicate> 23 _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator 24 remove_if(_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred) { 25 __first = std::find_if<_ForwardIterator, _Predicate&>(__first, __last, __pred); 26 if (__first != __last) { 27 _ForwardIterator __i = __first; 28 while (++__i != __last) { 29 if (!__pred(*__i)) { 30 *__first = std::move(*__i); 31 ++__first; 32 } 33 } 34 } 35 return __first; 36 } 37 38 _LIBCPP_END_NAMESPACE_STD 39 40 #endif // _LIBCPP___ALGORITHM_REMOVE_IF_H 41