std::ranges::elements_view<V,F>::iterator<Const>::operator*
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< cpp | ranges | elements view | iterator
C++
Ranges library
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std::ranges::elements_view
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Iterator | ||||
elements_view::iterator::operator* | ||||
Sentinel | ||||
constexpr decltype(
auto
) operator*
(
)
const
;
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(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)
- std::get<N>(*e) , if ranges::range_reference_t<Base>
- static_cast <E> (std:: get <N> ( *e) ) , where E is std::remove_cv_t < std::tuple_element_t <N, ranges::range_reference_t <Base>>>
Parameters
(none)
Return value
The current element.
Notes
operator-> is not provided.
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
See also
(C++20)
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accesses an element by index (public member function) |