Need a variable to get its value in different classes, how to be?

Question

Swift

You need to save the username and get its value in different classes, I thought to use UserDefaults, but the key will not be known, what then?

Answer 1

The answer is here:
https://medium.com/@nimjea/userdefaults-in-swift-4...

Answer 2

The best thing is to get used to writing correctly.
And it is correct that such a thing as you described never happened.
If you need a variable to be used in different classes - pass it to instances of these classes. Using UserDefaults to pass a variable (???!!!!!!) is the wildest slag.

Answer 3

import Foundation
import UIKit

final class shared{
    static var users: String = ""
}

assignment: shared.users = "VALUE"
access the variable just like shared.users