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

0. Introduction

01 - Benefits - Protocol-oriented programming
02 - What you should know

1. The Pillars of Protocol Orientation

03 - What is protocol-oriented programming
04 - Introducing the protocol
05 - Adopting protocols
06 - Conforming to protocols via extensions
07 - Understanding polymorphism
08 - Protocol inheritance
09 - Adopting multiple protocols
10 - Protocol extensions
11 - Challenge - Removing tight coupling
12 - Solution - Removing tight coupling

2. Protocol-Oriented Programming

13 - Why protocols
14 - From unstructured code to POP
15 - Designing with classes - First try
16 - Designing with classes - Subclassing
17 - The benefits of thinking in protocols
18 - Highlighting the differences

3. Generics

19 - The importance of generics
20 - Defining generic functions and methods
21 - Working with generic types
22 - Placeholder types in protocols
23 - Using generics with protocols
24 - Challenge - Implementing a generic stack
25 - Solution - Implementing a generic stack

4. Implement the Weather App Using POP

26 - Weather app design
27 - Defining the UI using SwiftUI
28 - The WebServiceController protocol
29 - Working with a third-party API
30 - Implementing the OpenWeatherMap controller
31 - Completing the OpenWeatherMap controller
32 - Introducing the view model
33 - Presenting weather data
34 - Challenge - Integrating a fallback service
35 - Solution - Integrating a fallback service

Conclusion

36 - Next steps

Swift 5: Protocol-Oriented Programming

Authors

Károly Nyisztor