Swift 5: Protocol-Oriented Programming

Course details

Take a closer look at protocol-oriented programming (POP), a new paradigm introduced by Apple. In this course, instructor Károly Nyisztor explains what POP is, how it differs from classical approaches, and how to work with it to efficiently develop apps with Swift. Learn about the pillars of POP: protocol extensions, protocol inheritance, and protocol composition. Protocol extensions let you define default behavior for conforming types without defining a base class. Protocol inheritance is a powerful feature that lets you create more granular designs. Swift does not allow multiple inheritance for classes—but with protocol composition, Swift types can adopt multiple protocols. Plus, explore generics, and see how to implement a fully functional app using a protocol-oriented approach.

Learning objectives
Comparing OOP with POP
Adopting a protocol
Working with generic types
Using generics with protocols
Implementing an app using POP
Integrating a fallback service

Concepts

Introduction

benefits- protocol-oriented programming
what you should know

The Pillars of Protocol Orientation

what is protocol-oriented programming-
introducing the protocol
adopting protocols
conforming to protocols via extensions
understanding polymorphism
protocol inheritance
adopting multiple protocols
protocol extensions
challenge- removing tight coupling
solution- removing tight coupling

Protocol-Oriented Programming

why protocols-
from unstructured code to pop
designing with classes- first try
designing with classes- subclassing
the benefits of thinking in protocols
highlighting the differences

Generics

the importance of generics
defining generic functions and methods
working with generic types
placeholder types in protocols
using generics with protocols
challenge- implementing a generic stack
solution- implementing a generic stack

Implement the Weather App Using POP

weather app design
defining the ui using swiftui
the webservicecontroller protocol
working with a third-party api
implementing the openweathermap controller
completing the openweathermap controller
introducing the view model
presenting weather data
challenge- integrating a fallback service
solution- integrating a fallback service

Conclusion

next steps