Generics enable us to write flexible and reusable functions, methods, and types that can work with any type. This chapter explains how to define and use Generics and introduces the problems that can be solved with Generics in the Swift programming language with examples.

This chapter will cover the following topics with coding examples:

• Generic functions and methods
• Generic parameters
• Generic type constraints and where clauses
• Generic data structures
• Associated type protocols
• Type erasure
• Extending Generic types
• Subclassing Generic classes