Book Image

Swift 4 Protocol-Oriented Programming - Third Edition

By : Jon Hoffman
Book Image

Swift 4 Protocol-Oriented Programming - Third Edition

By: Jon Hoffman

Overview of this book

Swift has become the number one language used in iOS and macOS development. The Swift standard library is developed using protocol-oriented programming techniques, generics, and first-class value semantics; therefore, every Swift developer should understand these powerful concepts and how to take advantage of them in their application design. This book will help you understand the differences between object-oriented programming and protocol-oriented programming. It will demonstrate how to work with protocol-oriented programming using real-world use cases. You will gain a solid knowledge of the various types that can be used in Swift and the differences between value and reference types. You will be taught how protocol-oriented programming techniques can be used to develop very flexible and easy-to-maintain code. By the end of the book, you will have a thorough understanding of protocol-oriented programming and how to utilize it to build powerful and practical applications.
Table of Contents (15 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Structural design patterns


Structural design patterns describe how types can be combined to form larger structures. These larger structures can generally be easier to work with and hide a lot of the complexity of the individual types. Most patterns in the structural pattern category involve connections between objects.

There are seven well-known patterns that are part of the structural design pattern type. These are as follows:

  • Adapter: This allows types with incompatible interfaces to work together
  • Bridge: This is used to separate the abstract elements of a type from the implementation, so the two can vary
  • Composite: This allows us to treat a group of objects as a single object
  • Decorator: This lets us add or override behavior in an existing method of an object
  • Facade: This provides a simplified interface for a larger and more complex body of code
  • Flyweight: This allows us to reduce the resources needed to create and use a large number of similar objects
  • Proxy: This is a type acting as an interface...