|  | 
        A type trait that determines whether a query
        expression will not throw.
      
template< typename T, typename Property> struct is_nothrow_query : public integral_constant< bool, automatically_determined >
        Class template is_nothrow_query
        is a trait that is derived from true_type
        if the expression asio::query(std::declval<T>(),
        std::declval<Property>())
        is noexcept; otherwise false_type.
      
        Header: asio/query.hpp
      
        Convenience header: asio.hpp