How To USe By Default Selecected Row And Checkmark UITableView In Swift

let indexPath = NSIndexPath(forRow: 0, inSection: 0);
    self.tableView.selectRowAtIndexPath(indexPath, animated: false, 

 scrollPosition: UITableViewScrollPosition.None)
    self.tableView(self.tableView, didSelectRowAtIndexPath: indexPath)

func tableView(tableView: UITableView!, didSelectRowAtIndexPath 

indexPath: NSIndexPath!) {
    NSLog("You selected cell number: \(indexPath.row)!")
    self.performSegueWithIdentifier("yourIdentifier", sender: self) 
}

override func tableView(tableView: UITableView, didSelectRowAtIndexPath

 indexPath: NSIndexPath) {

    let indexPath = tableView.indexPathForSelectedRow()

    let currentCell = tableView.cellForRowAtIndexPath(indexPath) 

 as UITableViewCell

    println(currentCell.textLabel!.text)  

override func viewDidLoad() {
    super.viewDidLoad()

    // …

    tableView.registerClass(UITableViewCell.self, forCellReuseIdentifier:

  "categoryCell")
}


func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: 

 NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier("categoryCell",

  forIndexPath: indexPath) as UITableViewCell
    cell.accessoryType = (lastSelectedIndexPath?.row == indexPath.row)

  ? .Checkmark : .None
    cell.textLabel?.text = categories[indexPath.row]

    return cell
}


func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: 

 NSIndexPath) {
    tableView.deselectRowAtIndexPath(indexPath, animated: true)

    if indexPath.row != lastSelectedIndexPath?.row {
        if let lastSelectedIndexPath = lastSelectedIndexPath {
     let oldCell = tableView.cellForRowAtIndexPath(lastSelectedIndexPath)
            oldCell?.accessoryType = .None
        }

        let newCell = tableView.cellForRowAtIndexPath(indexPath)
        newCell?.accessoryType = .Checkmark

        lastSelectedIndexPath = indexPath
    }
}