bool is_open();

void swap( basic_istringstream& other );

explicit basic_ostream( std::basic_streambuf<CharT, Traits>* sb );

basic_istream& unget();

template< class CharT, class Traits, class Alloc > void swap(

void close();

Defined in header

void freeze(bool flag = true);

template< class CharT, class Traits, class Alloc > void

Defined in header