Swift 5: Protocol-Oriented Programming

Take a deep dive into protocol-oriented programming (POP), a new paradigm introduced by Apple. Learn how to work with POP to design and implement modern software with Swift.

Introduction

• Benefits: Protocol-oriented programming
• What you should know

1. 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

2. 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

3. 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

4. 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