- void set (string header_string, string data_string, string footer_string);
- virtual string to_string () const;
- virtual string data_string () const;
- DECLARE_CLASSNAME(Midi_chunk);
+ void set (const std::string &header_string, const std::string &data_string, const std::string &footer_string);
+ virtual std::string to_string () const;
+ virtual std::string data_string () const;
+ DECLARE_CLASSNAME (Midi_chunk);