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move.hpp
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1
2// Range v3 library
3//
4// Copyright Eric Niebler 2014-present
5//
6// Use, modification and distribution is subject to the
7// Boost Software License, Version 1.0. (See accompanying
8// file LICENSE_1_0.txt or copy at
9// http://www.boost.org/LICENSE_1_0.txt)
10//
11// Project home: https://github.com/ericniebler/range-v3
12//
13#ifndef RANGES_V3_ALGORITHM_MOVE_HPP
14#define RANGES_V3_ALGORITHM_MOVE_HPP
15
16#include <utility>
17
19
20#include <range/v3/algorithm/result_types.hpp>
28#include <range/v3/utility/static_const.hpp>
29
30#include <range/v3/detail/prologue.hpp>
31
32namespace ranges
33{
36 template<typename I, typename O>
37 using move_result = detail::in_out_result<I, O>;
38
39 RANGES_HIDDEN_DETAIL(namespace _move CPP_PP_LBRACE())
40 RANGES_FUNC_BEGIN(move)
41
43 template(typename I, typename S, typename O)(
44 requires input_iterator<I> AND sentinel_for<S, I> AND
45 weakly_incrementable<O> AND indirectly_movable<I, O>)
46 constexpr move_result<I, O> RANGES_FUNC(move)(I first, S last, O out) //
47 {
48 for(; first != last; ++first, ++out)
49 *out = iter_move(first);
50 return {first, out};
51 }
52
54 template(typename Rng, typename O)(
55 requires input_range<Rng> AND weakly_incrementable<O> AND
56 indirectly_movable<iterator_t<Rng>, O>)
57 constexpr move_result<borrowed_iterator_t<Rng>, O> //
58 RANGES_FUNC(move)(Rng && rng, O out) //
59 {
60 return (*this)(begin(rng), end(rng), std::move(out));
61 }
62
63 RANGES_FUNC_END(move)
64 RANGES_HIDDEN_DETAIL(CPP_PP_RBRACE())
65
66#ifndef RANGES_DOXYGEN_INVOKED
67 struct RANGES_EMPTY_BASES move_fn
69 , _move::move_fn
70 {
71 using aux::move_fn::operator();
72 using _move::move_fn::operator();
73 };
74
75 RANGES_INLINE_VARIABLE(move_fn, move)
76#endif
77
78 namespace cpp20
79 {
80 using ranges::move_result;
81 using ranges::RANGES_HIDDEN_DETAIL(_move::) move;
82 } // namespace cpp20
84} // namespace ranges
85
86#include <range/v3/detail/epilogue.hpp>
87
88#endif
front< Pair > first
Retrieve the first element of the pair Pair.
Definition meta.hpp:2251
Definition move.hpp:33
Definition move.hpp:70