Swift Design Patterns

Preface

• Welcome
• How this book is structured

MVC

Start with Apple's preferred software architecture.

• Model-View-Controller
• MVC: Advantages and Disadvantages
• Fixing MVC

MVVM

Explore an increasingly popular alternative to MVC.

• Model-View-ViewModel
• MVVM: Advantages and Disadvantages
• Bindings in Practice

Architecting for SwiftUI

Special considerations when building SwiftUI apps.

• What changes with SwiftUI?
• MVVM – but where’s the VM?
• Separating logic and layout
• @ViewBuilder properties and methods
• Limiting data dependencies
• Unidirectional data flow
• Conforming to Identifiable

Platform Patterns

Design patterns we inherited from Objective-C APIs.

• Delegation
• Selectors
• Notifications
• Associative Storage
• Archiving
• Bundles

Language Patterns

Design patterns that are idiomatic to Swift.

• Initialization
• Extensions
• Protocols
• Protocol Extensions
• Accessors
• Key paths
• Anonymous Types
• Concurrency

Classic Patterns

Design patterns that are used widely by Apple developers.

• Singletons
• Responder Chain
• Template Method
• Enumeration
• Proxies
• Facades
• Decorators
• Flyweight

Wrap Up

• The Best Laid Plans
• Guidelines recap

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