std::ranges::take_while_view<V,Pred>::end - cppreference.com
From cppreference.com
constexpr auto end() requires (!/*simple-view*/<V>); |
(1) | (since C++20) |
constexpr auto end() const requires ranges::range<const V> && std::indirect_unary_predicate<const Pred, ranges::iterator_t<const V>>; |
(2) | (since C++20) |
Returns a sentinel representing the end of the view.
Let base_ denote the underlying view.
1) Effectively returns /*sentinel*/<false>(ranges::end(base_), std::addressof(pred())).
2) Effectively returns /*sentinel*/<true>(ranges::end(base_), std::addressof(pred())).
Overload (1) does not participate in overload resolution if V is a simple view (that is, if V and const V are views with the same iterator and sentinel types).
Parameters
(none)
Return value
A sentinel representing the end of the view.
Example
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 3450 | C++20 | the const overload might return a sentinel non-comparable to the iterator
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constrained |