Instruct Your View With A ViewModel: Should It Be A Class or a Struct?
Another choice?
Difficulty: Beginner | Easy | Normal | Challenging
This article has been developed using Xcode 12.0.1, and Swift 5.3
Terminology:
struct: An object defined in Swift, using pass by value semantics
class: An object that defines properties and methods in common
Prerequisites
- Be able to create a basic Swift application
- You might also like to see the following video to help you out with the differences between Structs and Classes — https://youtu.be/xhfXJ7a2LG8
There are a couple of different ways you can create your ViewModel if you implement the MVVM architecture.
If you’d prefer a video, don’t worry — I’ve got you covered: https://youtu.be/xhfXJ7a2LG8
A comparison project
I’ve created a simple project that has one view using a class for the view model, and one using a struct for the view model.
We can see the two view models (see the rather rubbish function that can print to the console).
