TableViewController.swift

// Aiming to print out the value of a cell's text label when tapped. Assume the below
// method is inside the implementation of a UITableViewController subclass.
override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    let cell: UITableViewCell? = tableView.cellForRowAtIndexPath(indexPath)
    guard let _ = cell where cell != nil else {
        return
    }
    
    tableView.deselectRowAtIndexPath(indexPath, animated: true)
    print("Tapped cell with label:", cell!.textLabel?.text)
}

guard cell != nil else { ... }

guard is basically if but the else block has to return, break, or continue.