std::ranges::enumerate_view<V>::end
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(C++23)
std::ranges::enumerate_view
enumerate_view::end
(C++26)
constexpr auto end() requires (!__simple_view<V>);
(1)
(since C++23)
constexpr auto end() const requires /*range-with-movable-references*/<const V>;
(2)
(since C++23)
Returns an iterator or a sentinel that compares equal to the end iterator of the enumerate_view.
Let base_ denote the underlying view.
1) Equivalent to:
if constexpr (ranges::forward_range <V> and ranges::common_range <V> and ranges::sized_range <V>) return /*iterator*/<false>(ranges::end (base_), ranges::distance (base_)); else return /*sentinel*/<false>(ranges::end (base_));
2) Equivalent to:
if constexpr (ranges::forward_range <const V> and ranges::common_range <const V> and ranges::sized_range <const V>) return /*iterator*/<true>(ranges::end (base_), ranges::distance (base_)); else return /*sentinel*/<true>(ranges::end (base_));
[edit] Parameters
(none)
[edit] Return value
An iterator or a sentinel representing the end of the enumerate_view, as described above.
[edit] Example
This section is incomplete
Reason: no example
Reason: no example
[edit] Defect reports
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
| DR | Applied to | Behavior as published | Correct behavior |
|---|---|---|---|
| LWG 3919 | C++23 | ranges::distance may invoke UB for sized commonnon-forward underlying ranges |
sentinel type is returned for such ranges |