Swift - TableViewController覆盖旧数据

Question

这是我的情况。当我按下按钮时，我移动到下一个屏幕，同时它将我的2个参数放在TableView中。它必须像MasterDetailApplication一样工作，我努力。当我按下按钮一切正常。我的问题是，我怎么能这样做，当我按下按钮时，数据（2个参数）保存在TableView中，当我再次执行时（按下后退按钮并再次按下Go按钮），新数据将覆盖旧的一。我希望新数据不会覆盖旧数据，它们必须高于它们。这是我的代码：

//Parameters.swift
import Foundation

struct Parameters {
    let toPass : String
    let toPass2: String
}

//SecondViewController

import UIKit

class SecondViewController: UIViewController {

    var timer = NSTimer()
    var counter = 0
    @IBOutlet weak var labelCounter: UILabel!

    override func viewDidLoad() {
        super.viewDidLoad()
        navigationItem.hidesBackButton = true
        labelCounter.text = String(counter)
        timer = NSTimer.scheduledTimerWithTimeInterval(1,target:self, selector: Selector("update"),userInfo: nil, repeats :true)

    }

    func update(){    
        labelCounter.text = String(++counter)
        if counter == 15 {
            timer.invalidate()
        }
    }

    override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject!) {
        let formatter = NSDateFormatter()
        formatter.dateFormat = "yyyy-MM-dd hh:mm:ss"
        if (segue.identifier == "segueTest") { 
            var transfer = segue.destinationViewController as TableViewController
            transfer.toPass = labelCounter.text
            transfer.toPass2 = "\(formatter.stringFromDate(NSDate()))"
        }
    }
 }

//TableViewCOntroller   
import UIKit

class TableViewController: UITableViewController {

    @IBOutlet weak var label1: UILabel!

    var toPass: String!
    var toPass2: String!
    var objects = [Parameters]()

    override func viewDidLoad() {
        super.viewDidLoad()
        self.objects = [Parameters(toPass: toPass2, toPass2: toPass)]
        // self.view.backgroundColor = UIColor(red :184.0, green: 219.0, blue: 243.0)
        //  self.tableView.registerClass(UITableViewCell.self, forCellReuseIdentifier: "Cell")
        // tableView.dataSource = self
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
        return 1
    }

    override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {

        return self.objects.count
    }

    override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCellWithIdentifier("tableCell", forIndexPath: indexPath) as UITableViewCell
        var param : Parameters
        param = objects[indexPath.row]
        cell.textLabel.text = param.toPass
        cell.detailTextLabel?.text = param.toPass2 + " sec"
        return cell
    }
}