IOがあるのでlexical_castでstd::stringに変換できます。 #include <iostream> #include <string> #include <boost/lexical_cast.hpp> #include <boost/uuid/uuid.hpp> #include <boost/uuid/uuid_generators.hpp> #include <boost/uuid/uuid_io.hpp> int main() { const std::string s = boost::lexical_cast<std::string>(boost::uuids:…</std::string></boost/uuid/uuid_io.hpp></boost/uuid/uuid_generators.hpp></boost/uuid/uuid.hpp></boost/lexical_cast.hpp></string></iostream>