Struct template in_out

Struct template in_out_result

boost::text::in_out_result

// In header: <boost/text/in_out_result.hpp>

template<typename I, typename O> 
struct in_out_result {

  // public data members
  I in;
  O out;
};

A replacement for C++20's std::ranges::in_out_result for use in pre-C++20 build modes.