25 Localization library [localization]

25.4 Standard locale categories [locale.categories]

25.4.7 The message retrieval category [category.messages]

25.4.7.2 Class template messages_­byname [locale.messages.byname]

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();
    };
}