|  | 
| template<typename T > | 
| constexpr T & | operator() (ref_view< T > t) const noexcept | 
|  | This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. 
 | 
|  | 
| template<typename T > | 
| constexpr reference_wrapper< T >::reference | operator() (reference_wrapper< T > t) const noexcept | 
|  | This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. 
 | 
|  | 
| template<typename T > | 
| constexpr T & | operator() (std::reference_wrapper< T > t) const noexcept | 
|  | This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. 
 | 
|  | 
| template<typename T > | 
| constexpr T && | operator() (T &&t) const noexcept | 
|  |