std::swap(std::array)
From cppreference.com
                    
                                        
                    
                    
                                                            
                    
| template< class T, std::size_t N > void swap( array<T,N>& lhs,  | (since C++11) | |
Specializes the std::swap algorithm for std::array. Swaps the contents of lhs and rhs. Calls lhs.swap(rhs).
| This function does not participate in overload resolution unless N == 0or std::is_swappable<T>::value is true | (since C++17) | 
Parameters
| lhs, rhs | - | containers whose contents to swap | 
Return value
(none)
Complexity
Linear in size of the container.
| Exceptionsnoexcept specification:  
 noexcept(noexcept(lhs.swap(rhs))) | (since C++17) | 
See also
| swaps the contents (public member function) |