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 is an older version of Boost and was released in 2023. The current version is 1.89.0.
boost::mpi::request::legacy_serialized_handler
// In header: <boost/mpi/request.hpp> template<typename T> class legacy_serialized_handler { };