constexpr reverse_iterator rend() noexcept();
constexpr const_reverse_iterator rend() const noexcept();
constexpr const_reverse_iterator crend() const noexcept();

Returns a reverse iterator to the element following the last element of the reversed container. It corresponds to the element preceding the first element of the non-reversed container. This element acts as a placeholder; attempting to access it results in undefined behaviour, it is not dereferencable.

(none)

reverse iterator to the element following the last element.

Constant.

#include <haz/SharedQueue.hpp>
#include <iostream>

int main() {
    haz::SharedQueue<int, 10> queue{ 0, 1, 2, 3 };
    for(typename haz::SharedQueue<int, 10>::reverse_iterator it = queue.rbegin(); it != queue.rend(); ++it)
        std::cout << *it << ", ";
    std::cout << '\n';
}

Output:

3, 2, 1, 0,