Apple introduced nullability annotations to Objective-C compiler from XCode 6.3. I was really surprised by this change, and welcomed it with open arms when I saw the release notes. My first thought was: Objective-C is learning from Swift! I want to share my 2 cents on this new annotation and what it means for more modern Objective-C code.

I’ve gradually been changing my code style favouring (Obj-C) categories and (Swift) extensions a lot more. I’ve been inspired by my other lover (Ruby). Why? Readability and code organisation.