std::ranges::elements_view<V,F>:: iterator <Const>:: operator*
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Iterator | ||||
elements_view::
iterator
::operator*
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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 ) 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 >>> .
Parameters
(none)
Return value
The current element.
Notes
operator - > is not provided.
Example
#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) |