A type trait that determines whether a start expression is well-formed.

template<
    typename R>
struct can_start

Class template can_start is a trait that is derived from true_type if the expression execution::start(std::declval<R>(), std::declval<E>()) is well formed; otherwise false_type.

Requirements

Header: asio/execution/start.hpp

Convenience header: asio/execution.hpp