int count ();
void add_thing (SCM);
bool has_interface ();
- void set_interface ();
+
};
struct Pointer_group_interface {
Pointer_group_interface (Score_element*);
Pointer_group_interface (Score_element*, String);
int count ();
- void set_interface ();
+
static bool has_interface (Score_element*);
bool has_interface ();
void add_element (Score_element*);