Protocols and Delegates
Congratulations! You are acquiring the skills to become an iOS developer! However, iOS developers need to understand two additional topics in order to be successful: protocols and delegates. It is not uncommon for new developers to get overwhelmed by these topics, which is why we introduced the foundational topics of the Swift language first. After reading this chapter, you will see that protocols and delegates are really useful and not hard to understand and implement.
Figure 12-1. Typical Swift inheritance