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This is an older version of Boost and was released in 2021. The current version is 1.90.0.
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.
Header: boost/asio/execution/start.hpp
Convenience header: boost/asio/execution.hpp