NAME¶

std::ranges::chunk_view::end - std::ranges::chunk_view::end

Synopsis¶

V models only input_range
constexpr std::default_sentinel_t end() const noexcept; (1) (since C++23)
V models forward_range
constexpr auto end() requires (!__simple_view<V>); (2) (since C++23)
constexpr auto end() const requires ranges::forward_range<const (3) (since C++23)
V>;

Returns an iterator or a std::default_sentinel that compares equal to the end
iterator of the chunk_view.

1) Available only if V models input_range. Equivalent to: return
std::default_sentinel.
2,3) Available if V models forward_range. Let base_ denote the underlying adapted
view, n_ denote the stored chunk size, and iterator denote the nested iterator
class.
2) Equivalent to:

if constexpr (ranges::common_range<V> && ranges::sized_range<V>)
{
auto missing = (n_ - ranges::distance(base_) % n_) % n_;
return iterator<false>(this, ranges::end(base_), missing);
}
else if constexpr (ranges::common_range<V> && !ranges::bidirectional_range<V>)
return iterator<false>(this, ranges::end(base_));
else
return std::default_sentinel;

3) Equivalent to:

if constexpr (ranges::common_range<const V> && ranges::sized_range<const V>)
{
auto missing = (n_ - ranges::distance(base_) % n_) % n_;
return iterator<true>(this, ranges::end(base_), missing);
}
else if constexpr (ranges::common_range<const V> && !ranges::bidirectional_range<const V>)
return iterator<true>(this, ranges::end(base_));
else
return std::default_sentinel;

Parameters¶

(none)

Return value¶

An iterator or sentinel representing the end of the chunk_view, as described above.

Example¶

This section is incomplete
Reason: no example

See also¶

begin returns an iterator to the beginning
(C++23) (public member function)
ranges::end returns a sentinel indicating the end of a range
(C++20) (customization point object)

Category:¶

* Todo no example