I have learnt the syntax for Objective-C and i went through the iOS Programming 4th. I do not have experience writing code, as the time i learn objective-c , swift came out just then. However I'm finding it quite hard to understand the coding in first few pages of Chapter 19.
It says at the beginning of Part 5 that this part of the book covers concepts that are essential to more experienced swift developers. So are we expected to know how to type/read code like that easily or is it just there to give us the main ideas about protocols. Can some instructor please give a detailed response.