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A type trait that determines whether a execute expression is
well-formed.
template<
typename T,
typename F>
struct can_execute
Class template can_execute is a trait that is derived from
true_type if the expression execution::execute(std::declval<T>(),
std::declval<F>()) is well formed; otherwise false_type.
Header: asio/execution/execute.hpp
Convenience header: asio/execution.hpp