Protocols and generics

This chapter explores the sophisticated use of protocols and generics in Swift, which are essential for developing flexible and secure software components. You'll learn how to customize protocols for specific class types and set precise requirements for them. Additionally, you'll discover how to boost protocol capabilities with associated types and streamline your code with default implementations in protocol extensions.

These techniques enhance the simplicity and organization of your code while maintaining its adaptability. You'll also learn to build strong and organized interfaces through protocol inheritance and the use of factory methods, which simplify the creation of types that conform to protocols.

With practical examples to guide you, this chapter will arm you with the skills to effectively use protocols and generics, greatly improving the strength and ease of maintenance of your Swift applications.