title: How to refresh UIViewController programmatically?
body: <p>I have a ViewController in which the user selects a card (a custom UIButton) out of a UIScrollView. I have intercepted the touch event selecting the card and identified it, and then removed it from the data source, but it still exists in the UISubView. How do I get rid of it? Refreshing the view should show it removed from the view. How do I do that?</p>