cppdraft_translate/cppdraft/range/reverse/view.md

[range.reverse.view]

25 Ranges library [ranges]

25.7 Range adaptors [range.adaptors]

25.7.21 Reverse view [range.reverse]

25.7.21.2 Class template reverse_view [range.reverse.view]

🔗

namespace std::ranges {template<view V>requires bidirectional_rangeclass reverse_view : public view_interface<reverse_view> {private: V base_ = V(); // exposition onlypublic: reverse_view() requires default_initializable = default; constexpr explicit reverse_view(V r); constexpr V base() const & requires copy_constructible { return base_; }constexpr V base() && { return std::move(base_); }constexpr reverse_iterator<iterator_t> begin(); constexpr reverse_iterator<iterator_t> begin() requires common_range; constexpr auto begin() const requires common_range; constexpr reverse_iterator<iterator_t> end(); constexpr auto end() const requires common_range; constexpr auto size() requires sized_range {return ranges::size(base_); }constexpr auto size() const requires sized_range {return ranges::size(base_); }constexpr auto reserve_hint() requires approximately_sized_range {return ranges::reserve_hint(base_); }constexpr auto reserve_hint() const requires approximately_sized_range {return ranges::reserve_hint(base_); }}; template reverse_view(R&&) -> reverse_view<views::all_t>;}

🔗

constexpr explicit reverse_view(V base);

1

#

Effects: Initializes base_ with std​::​move(base).

🔗

constexpr reverse_iterator<iterator_t<V>> begin();

2

#

Returns: make_reverse_iterator(ranges::next(ranges::begin(base_), ranges::end(base_)))

3

#

Remarks: In order to provide the amortized constant time complexity required by the range concept, this function caches the result within thereverse_view for use on subsequent calls.

🔗

constexpr reverse_iterator<iterator_t<V>> begin() requires [common_range](range.refinements#concept:common_range "25.4.6 Other range refinements [range.refinements]")<V>; constexpr auto begin() const requires [common_range](range.refinements#concept:common_range "25.4.6 Other range refinements [range.refinements]")<const V>;

4

#

Effects: Equivalent to: return make_reverse_iterator(ranges​::​end(base_));

🔗

constexpr reverse_iterator<iterator_t<V>> end(); constexpr auto end() const requires [common_range](range.refinements#concept:common_range "25.4.6 Other range refinements [range.refinements]")<const V>;

5

#

Effects: Equivalent to: return make_reverse_iterator(ranges​::​begin(base_));