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1// -*- C++ -*-
2//===----------------------------------------------------------------------===//
3//
4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5// See https://llvm.org/LICENSE.txt for license information.
6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7//
8//===----------------------------------------------------------------------===//
9
10#ifndef _LIBCPP___ALGORITHM_FOR_EACH_H
11#define _LIBCPP___ALGORITHM_FOR_EACH_H
12
13#include <__algorithm/for_each_segment.h>
14#include <__config>
15#include <__iterator/segmented_iterator.h>
16#include <__type_traits/enable_if.h>
17
18#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
19# pragma GCC system_header
20#endif
21
22_LIBCPP_BEGIN_NAMESPACE_STD
23
24template <class _InputIterator, class _Sent, class _Func>
25_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void __for_each(_InputIterator __first, _Sent __last, _Func& __f) {
26 for (; __first != __last; ++__first)
27 __f(*__first);
28}
29
30#ifndef _LIBCPP_CXX03_LANG
31template <class _SegmentedIterator,
32 class _Function,
33 __enable_if_t<__is_segmented_iterator<_SegmentedIterator>::value, int> = 0>
34_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void
35__for_each(_SegmentedIterator __first, _SegmentedIterator __last, _Function& __func) {
36 using __local_iterator_t = typename __segmented_iterator_traits<_SegmentedIterator>::__local_iterator;
37 std::__for_each_segment(__first, __last, [&](__local_iterator_t __lfirst, __local_iterator_t __llast) {
38 std::__for_each(__lfirst, __llast, __func);
39 });
40}
41#endif // !_LIBCPP_CXX03_LANG
42
43template <class _InputIterator, class _Function>
44_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _Function
45for_each(_InputIterator __first, _InputIterator __last, _Function __f) {
46 std::__for_each(__first, __last, __f);
47 return __f;
48}
49
50_LIBCPP_END_NAMESPACE_STD
51
52#endif // _LIBCPP___ALGORITHM_FOR_EACH_H
53

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source code of libcxx/include/__algorithm/for_each.h