29 Input/output library [input.output]

29.8 String-based streams [string.streams]

29.8.5 Class template basic_stringstream [stringstream]

29.8.5.2 Assignment and swap [stringstream.assign]

void swap(basic_stringstream& rhs);

Effects: Equivalent to:

basic_iostream<charT,traits>::swap(rhs);
sb.swap(rhs.sb);

template<class charT, class traits, class Allocator>
  void swap(basic_stringstream<charT, traits, Allocator>& x,
            basic_stringstream<charT, traits, Allocator>& y);

Effects: Equivalent to: x.swap(y).