void (*var_changed) (struct dictionary *, int, void *);
void (*var_resized) (struct dictionary *, int, int, void *);
void (*weight_changed) (struct dictionary *, int, void *);
void (*filter_changed) (struct dictionary *, int, void *);
void (*split_changed) (struct dictionary *, void *);
void (*var_changed) (struct dictionary *, int, void *);
void (*var_resized) (struct dictionary *, int, int, void *);
void (*weight_changed) (struct dictionary *, int, void *);
void (*filter_changed) (struct dictionary *, int, void *);
void (*split_changed) (struct dictionary *, void *);