iphone - Calling a SuperClass's DataSource? -

i working on simple slot machine. sub-classed uipickerview. pickerview datasource don't need define in controller, because 5. can define in subclass so?

@interface slotmachineview : uipickerview <uipickerviewdatasource> { 

}

@end

#import "slotmachineview.h"  @implementation slotmachineview  - (id)init{  if ((self = [super init])) {     super.datasource = self; }  return self; }   - (nsinteger)numberofcomponentsinpickerview:(uipickerview *)pickerview{  return 5; }   - (nsinteger)pickerview:(uipickerview *)pickerview numberofrowsincomponent:(nsinteger)component{  return 5; }  - (void)dealloc {  [super dealloc]; }  @end 

yes, can. can write self.datasource = self, because super , self same object*. remember, object instance of superclass instance of class it's declared as. has same properties , responds same messages.

_{*the difference between super , self super skips on methods defined in current class.}