std::basic_iostream<CharT,Traits>:: swap

From cppreference.com
protected :
void swap ( basic_iostream & other ) ;
(since C++11)

Exchanges the state with another input/output stream object. Effectively calls basic_istream < CharT,Traits > :: swap ( other ) .

This member function is protected: it is called by the swap member functions of the derived stream classes std::basic_stringstream and std::basic_fstream , which know how to correctly swap the associated stream buffers.


Parameters

other - another stream to exchange the state with

Return value

* this