namespace std {
template<class charT>
class messages_byname : public messages<charT> {
public:
using catalog = messages_base::catalog;
using string_type = basic_string<charT>;
explicit messages_byname(const char*, size_t refs = 0);
explicit messages_byname(const string&, size_t refs = 0);
protected:
~messages_byname();
};
}