std::ranges::zip_view<Views...>::end
constexpr auto end()
requires (!(/*simple-view*/<Views> && ...); |
(1) | (since C++23) |
constexpr auto end() const
requires (ranges::range<const Views> && ...); |
(2) | (since C++23) |
Returns a sentinel or an iterator representing the end of the std::zip_view.
1) If
/*zip-is-common*/<Views...> evaluates to
false, equivalent to
return /*sentinel*/<false>(/*tuple-transform*/(ranges::end, views_));.
Otherwise, if
(ranges::random_access_range<Views> && ...) evaluates to
true, equivalent to
return begin() + std::iter_difference_t</*iterator*/<false>>(size());.
Otherwise, equivalent to
return /*iterator*/<false>(/*tuple-transform*/(ranges::end, views_));.
2) If
/*zip-is-common*/<const Views...> evaluates to
false, equivalent to
return /*sentinel*/<true>(/*tuple-transform*/(ranges::end, views_));.
Otherwise, if
ranges::random_access_range<const Views> && ... evaluates to
true, equivalent to
return begin() + std::iter_difference_t</*iterator*/<true>>(size());.
Otherwise, equivalent to
return /*iterator*/<true>(/*tuple-transform*/(ranges::end, views_));.
Parameters
(none).
Return value
Iterator to the first element.
Notes
ranges::range<const ranges::zip_view<Views...>> is modeled if and only if for every type Vi in Views..., const Vi models range.
Example
See also
|
(C++23)
|
returns an iterator to the beginning (public member function) |
|
(C++20)
|
returns a sentinel indicating the end of a range (customization point object) |
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