Swift - trouble appending array from class

Question

I am having trouble understanding why the following code is replacing all of my array elements with the latest information when I am trying to just append it.

I ha

Answer 1

You are passing data to the array by reference, and in every loop you change the value of the reference:

self.aUser.username = object["username"] as! String
self.usersAvailableArray.append(self.aUser)

Try to create a new user every time:

var newUser = usersAvailable()
newUser.username = object["username"] as! String
self.usersAvailableArray.append(newUser)

This is happening because the object you are append come from a class, from appe documentation:

Classes Are Reference Types

Unlike value types, reference types are not copied when they are assigned to a variable or constant, or when they are passed to a function. Rather than a copy, a reference to the same existing instance is used instead. You can see more about values and references in Swift

Another solution is to change your class to a struct, like below, structs different if classes make a copy of the value when it is passes instead pass a reference.

struct usersAvailable {
    var username = String()
    var userAvatar = UIImage()
}