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
You've currently chosen the 1.89.0 version. If a newer release comes out, you will continue to view the 1.89.0 version, not the new latest release.
template< typename CompletionToken, completion_signature... Signatures, typename Initiation, typename... Args> DEDUCED async_initiate( Initiation && initiation, type_identity_t< CompletionToken > & token, Args &&... args);
Header: boost/asio/async_result.hpp
Convenience header: boost/asio.hpp