We will focus in this video on learning about enumerations (enums) and the Result data type, a special enum available in Swift 5. We will also learn about Swift extensions: what they are, what we can do in extensions, and what we cannot do, culminating with creating our first Swift extension. Then we will make a plan for refactoring our previously written JSON decoding function, so that this time our function will return a Result type instead of an optional custom structure. We will continue in the next video with implementing the plan developed in this video, so stay tuned...
Outline
The new Result data type (a special enum)
What are enumerations (enums)
The switch syntax
What are Swift extensions?
What is allowed in an extension?
What is NOT allowed in an extension?
Syntax for creating Swift extensions
Planning to Refactor Our JSON Decoding Function