std::span::rbegin, std::span::crbegin

constexpr reverse_iterator rbegin() const noexcept;

constexpr const_reverse_iterator crbegin() const noexcept;

Returns a reverse iterator to the first element of the reversed span. It corresponds to the last element of the non-reversed span. If the span is empty, the returned iterator is equal to rend().

Parameters

(none).

Return value

Reverse iterator to the first element.

Complexity

Constant.

See also