What is POP?
POP, which was introduced with Swift version 2.0, is one of the most exciting features of Swift. This development paradigm encourages developers to think differently about how they structure their code. POP shifts the focus from the rigid class inheritance of OOP to a more flexible way of defining and sharing behaviors, which leads to cleaner, more adaptable code.
Traditionally, OOP has been the go-to programming paradigm for building complex systems, relying on classes and inheritance to share functionality. However, as projects grow, this class-based approach can lead to tangled hierarchies and duplicated code, as seen in Chapter 19, which is where POP comes in. Rather than building structures based on what something “is” through inheritance, POP lets us focus on what something “does.” This is achieved by creating protocols, which is where the name POP comes from. Protocols act as blueprints for behavior that can be shared across multiple...
