std::basic_streambuf<CharT,Traits>::operator=
From cppreference.com
                    
                                        
                    < cpp | io | basic streambuf
                    
                                                            
                    | basic_streambuf& operator=( const basic_streambuf& other ); | (since C++11) | |
Assigns the data members of other to *this.
Parameters
| other | - | stream buffer to assign | 
Return value
*this
Exceptions
(none)
Example
| This section is incomplete Reason: no example |