Swift: Class Inheritance vs Protocols

Understanding the benefits of protocols is one of the key parts about Swift. I wanted to do a short video explaining one of the differences in my own words.

Using Playgrounds 4.0

[setiawan-joddy]

It's a great explanation! I can easily understand the difference between Class & Protocol. Thanks

[chovuse]

Great tutorial ! Is it possible with a little larger font ?

[Vi-wmnf]

Hey, thanks a lot! It's very understandable and nice! I have one question, maybe I'm wrong, but the grow and shrink functions should be mutable or not?

[writethatdown]

Your way of explaining things is really nice, but the font size in the editor is a bit small.