Bind a swift variable to another one

Question

I wanted to be able to bind a variable to a UILabel. I tried to create some sort of timer and I wanted to make sure that every time a variable counter gets modified, then also the text in the label will be updated automatically without writing it explicitly.

I thought of using something like this:

var _counter: Double = 0.0 
    var counter: Double{
        get{
            return _counter;
        }

        set{
            timeLabel.text = String(newValue);
            _counter = newValue;
        }

}

But I'm not sure if this is the best way (I also didn't managed to make it work this way).

What would you suggest to do?

Answer 1

Well to make your code work, you can try this:

var _counter: Double = 0.0 {
       didSet{
       timeLabel.text = String("\(_counter)")
       //old values can be retrieved by calling print("\(oldValue)")
       }
}