object::rbegin
Return a reverse iterator to the first element of the reversed container.
Synopsis
object::reverse_iterator
rbegin() noexcept; (1)
object::const_reverse_iterator
rbegin() const noexcept; (2)Description
The pointed-to element corresponds to the last element of the non-reversed container. If the container is empty, rend() is returned.
Complexity
Constant.
Exception Safety
No-throw guarantee.