std::ranges::elements_view<V,F>::iterator<Const>::operator*
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std::ranges::elements_view
(C++26)
elements_view::iterator::operator*
constexpr decltype(auto) operator*() const;
(since C++20)
Returns the element into V the underlying iterator points to.
Effectively returns /*get-element*/(this->base()), where for an expression e, /*get-element*/(e) is
- std::get<N>(*e), if ranges::range_reference_t <Base> is a reference type. Otherwise,
- static_cast<E>(std::get<N>(*e)), where E is std::remove_cv_t <std::tuple_element_t <N, ranges::range_reference_t <Base>>>.
Contents
[edit] Parameters
(none)
[edit] Return value
The current element.
[edit] Notes
operator-> is not provided.
[edit] Example
Run this code
#include <iostream> #include <ranges> #include <string_view> #include <tuple> int main() { using T = std::tuple <int, char, std::string_view >; const auto il = { T{1, 'A', "α"}, T{2, 'B', "β"}, T{3, 'C', "γ"}, }; const auto view {il | std::views::elements <2>}; const auto iter {view.begin() + 1}; std::cout << *iter << '\n'; }
Output:
β