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>>>. (none).
The current element.
operator-> is not provided.
#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
|
(C++20) | accesses an element by index (public member function) |
© cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
https://en.cppreference.com/w/cpp/ranges/elements_view/iterator/operator*