...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
The return type of the initiating function is the future obtained from the packaged task.
typedef std::future< Result > return_type;
Header: boost/asio/packaged_task.hpp
Convenience header: boost/asio.hpp