有人可以在Swift中发布一个MVC模式的好例子吗？

class Article {
  var title: String
  var body: String
  var date: NSDate
  var thumbnail: NSURL
  var saved: Bool
}

class ArticleViewController: UIViewController {
  var bodyTextView: UITextView
  var titleLabel: UILabel
  var dateLabel: UILabel

  var article: Article {
    didSet {
      titleLabel.text = article.title
      bodyTextView.text = article.body

      let dateFormatter = NSDateFormatter()
      dateFormatter.dateStyle = NSDateFormatterStyle.ShortStyle
      dateLabel.text = dateFormatter.StringFromDate(article.datE)
    }
  }
}