25 Localization library [localization]

namespace std {
  template <class charT>
  class numpunct_byname : public numpunct<charT> {
  // this class is specialized for char and wchar_­t.
  public:
    using char_type   = charT;
    using string_type = basic_string<charT>;

    explicit numpunct_byname(const char*, size_t refs = 0);
    explicit numpunct_byname(const string&, size_t refs = 0);
  protected:
    ~numpunct_byname();
  };
}