std::swap(std::tuple)
From cppreference.com
                    
                                        
                    
                    
                                                            
                    | template< class... Types > void swap( tuple<Types...>& lhs, tuple<Types...>& rhs ); | (since C++11) | |
Swaps the contents of lhs and rhs. Equivalent to lhs.swap(rhs).
Parameters
| lhs, rhs | - | tuples whose contents to swap | 
Return value
(none)
Exceptions
noexcept specification:  
noexcept(noexcept(lhs.swap(rhs)))