|  | 
        The is_executor
        trait detects whether a type T meets the Executor type requirements.
      
template< typename T> struct is_executor : public integral_constant< bool, automatically_determined >
        Class template is_executor
        is a UnaryTypeTrait that is derived from true_type
        if the type T meets the syntactic
        requirements for Executor, otherwise false_type.
      
        Header: asio/is_executor.hpp
      
        Convenience header: asio.hpp