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) |
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