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std::ranges::adjacent_view<V,N>::iterator<Const>::operator*

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< cpp‎ | ranges‎ | adjacent view‎ | iterator
 
 
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constexpr auto operator*() const;
(since C++23)

Returns the elements into V the underlying array of iterators points to.

Let current_ be an underlying array of iterators.

Equivalent to:

return __tuple_transform([](auto& i) -> decltype(auto) { return *i; }, current_);

Contents

[edit] Parameters

(none)

[edit] Return value

The current element, which is a std::tuple of references to underlying elements.

[edit] Notes

operator-> is not provided.

[edit] Example

A link to test: Compiler Explorer/g++-13

#include <ranges>
#include <tuple>
 
int main()
{
    constexpr static auto v = {0, 1, 2, 3, 4, 5};
    //                               └──┬──┘
    //                                  └─────────────────┐
    constexpr auto view {v | std::views::adjacent<3>}; // │
    constexpr auto iter {view.begin() + 2};            // │
    //              ┌────────────────────┬────────────────┘
    //              │                 ┌──┴──┐
    static_assert(*iter == std::tuple{2, 3, 4});
}

[edit] See also

accesses an element by index
(public member function)