codecvt::in
result in(State state&,
const To *first1, const To *last1, const To *next1,
From *first2, From *last2, From *next2);The member function returns do_in(state, first1, last1, next1, first2, last2, next2).
result in(State state&,
const To *first1, const To *last1, const To *next1,
From *first2, From *last2, From *next2);The member function returns do_in(state, first1, last1, next1, first2, last2, next2).