Update a textView text when an object is added to an array without overriding the previous object's textView text

Question

I'm trying to update a textview whenever an object is added to an array and show that text in the textview like this:

"object 1"
"object 2"

the issue is that every time a new object is added to the array it overwrites the object before it so it will just show:

  "object 2"

Here is the code I'm using, I'm not completely sure how to append the text so it shows all items in the array once a new item is added instead of just displaying the last item added.

   struct ObjectData {
   let name: String
   let type: String
   let code: Int
 }

    var updatedObjectArray = [ObjectData]() { didSet {
                self.updateObjectData(object: self.updatedObjectArray)
            }


       func updateObjectData(object: [ObjectData]) {

                for objectData in object {
                      self.ObjectTextView.text = objectData.name
                }
        }

Answer 1

In your for-loop, you are setting the text to a new value on every iteration, thus removing your last iteration's changes. You can append your names to a new string, then set the text at the end of the for-loop like this:

func updateObjectData(object: [ObjectData]) {
    var objectStrings = ""
    for objectData in object {
        objectStrings += objectData.name + "\n"
    }
    self.ObjectTextView.text = objectStrings
}

Or a swiftier way without the ending newline by mapping ObjectData to its name and joining with a newline:

func updateObjectData(object: [ObjectData]) {
    self.ObjectTextView.text = object.map({$0.name}).joined(separator: "\n")
}