### - o -

- off_type : std::basic_filebuf< _CharT, _Traits > , std::basic_ifstream< _CharT, _Traits > , std::basic_fstream< _CharT, _Traits > , std::basic_stringbuf< _CharT, _Traits, _Alloc > , __gnu_cxx::stdio_sync_filebuf< _CharT, _Traits > , __gnu_cxx::stdio_filebuf< _CharT, _Traits > , std::basic_ios< _CharT, _Traits > , std::basic_streambuf< _CharT, _Traits > , std::basic_stringstream< _CharT, _Traits, _Alloc > , std::basic_ostringstream< _CharT, _Traits, _Alloc > , std::basic_istringstream< _CharT, _Traits, _Alloc > , std::basic_istream< _CharT, _Traits > , std::basic_ostream< _CharT, _Traits > , std::basic_iostream< _CharT, _Traits > , std::basic_ofstream< _CharT, _Traits >
- openmode : std::ios_base
- ostream_type : std::ostream_iterator< _Tp, _CharT, _Traits > , std::ostreambuf_iterator< _CharT, _Traits >