Explore how to get around the Swift language limitation of not being able to define static mutable properties in generic types and protocol extensions.
Build a system for conforming polymorphic types to Codable protocol, that can be reused in multiple situations.
Customize encoding and decoding logic for individual fields of codable types in Swift by defining codable property wrappers.
Make Swift 5 enums that have multiple associated values of different types conform to Encodable and Decodable protocols for saving data to disk or interacting with Web APIs.