Prepare for Segue

segue.swift

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject!) {
  if segue.identifier == "singleTweetSegue" {
    var destination = segue.destinationViewController as SingleTweetViewController
      var indexPath = tableView.indexPathForSelectedRow()
      tableView.deselectRowAtIndexPath(indexPath!, animated: true)
      var tweetToDisplay = self.tweets![indexPath!.row] as Tweet
      destination.tweetShown = tweetToDisplay
    }
}