Return a reverse iterator to the last character of the string.
Declared in <bslstl_stringref.h>
StringRefImp<CHAR_TYPE>::const_reverse_iterator
rbegin() const;Return an STL-compatible reverse iterator to the last character of the string bound to this string reference or rend() if the string reference is empty. The iterator remains valid as long as this object is valid and is bound to the same string.
reverse iterator to the last character, or rend() if empty