Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
This version of Boost is under active development. You are currently in the develop branch. The current version is 1.90.0.
(Legacy.) The concrete completion handler type for the specific signature.
typedef CompletionToken completion_handler_type;
Header: boost/asio/async_result.hpp
Convenience header: boost/asio.hpp