ObjC: required to optional

Question

Hello Guys!

Situation: A protocol A implements a protocol B. B has some @optional and some (@)required methods.

Question: Is it possible in protocol A to set a method from B to the opposite (opt. to reeq. and vv.)?

Cheers!

Answer 1

You probably mean protocol A extends/enhances B.

Making a required method optional would break existing code. You can use an implementation of A where B is needed, but you don't provide a method that is required - so going from req. to opt. doesn't make sense at all.

The other way around should work from a logical point of view. Have not tested it, though, but firing up your compiler should take less than a minute.