...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
The handler type for the specific signature.
typedef conditional< is_same< CompletionToken, typename decay< CompletionToken >::type >::value, decay< CompletionToken >, handler_type< typename decay< CompletionToken >::type, Signature > >::type::type type;
Header: boost/asio/handler_type.hpp
Convenience header: boost/asio.hpp