...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::log::save_result
// In header: <boost/log/utility/functional/save_result.hpp> template<typename FunT, typename AssigneeT> save_result_wrapper< FunT, AssigneeT > save_result(FunT const & fun, AssigneeT & assignee);