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 2013. The current version is 1.89.0.
boost::program_options::value_semantic_codecvt_helper
// In header: <boost/program_options/value_semantic.hpp> template<typename charT> class value_semantic_codecvt_helper { };