成员的完整列表，这些成员属于 elc::defs::stream_n::noexcept_ostream_t,包括所有继承而来的类成员

elc::close()=0	elc::defs::stream_n::base_stream_t	pure virtual
elc::defs::stream_n::noexcept_stream_t::close() noexcept override=0	elc::defs::stream_n::noexcept_stream_t	pure virtual
elc::flush()=0	elc::defs::stream_n::base_stream_t	pure virtual
elc::defs::stream_n::noexcept_stream_t::flush() noexcept override=0	elc::defs::stream_n::noexcept_stream_t	pure virtual
elc::seek(seek_type, int_t)=0	elc::defs::stream_n::base_stream_t	pure virtual
elc::defs::stream_n::noexcept_stream_t::seek(seek_type, int_t) noexcept override=0	elc::defs::stream_n::noexcept_stream_t	pure virtual
elc::seek_to(int_t)=0	elc::defs::stream_n::base_stream_t	pure virtual
elc::defs::stream_n::noexcept_stream_t::seek_to(int_t) noexcept override=0	elc::defs::stream_n::noexcept_stream_t	pure virtual
elc::sync()=0	elc::defs::stream_n::base_stream_t	pure virtual
elc::defs::stream_n::noexcept_stream_t::sync() noexcept override=0	elc::defs::stream_n::noexcept_stream_t	pure virtual
elc::tell()	elc::defs::stream_n::base_stream_t	inlinevirtual
elc::defs::stream_n::noexcept_stream_t::tell() noexcept override	elc::defs::stream_n::noexcept_stream_t	inlinevirtual
~base_stream_t()=default	elc::defs::stream_n::base_stream_t	virtual