Using the NSObject protocol
December 07, 2011
I sometimes see code where the delegate has a type of NSObject rather than id:
id delegate;
NSObject *delegate;
and when asked "why" I'm always told the same answer:
"So that when using the delegate I can use the performSelector method"
This has always seemed odd to me, as when I am using the UITextfield delegate I
can use performSelector even through that delegate is of type id.
Some investigation of how these two types of delegates worked lead me to the
ans…