//CODING

 override func viewDidLoad() {
    super.viewDidLoad()

    let cal = NSCalendar.currentCalendar()
    var date = NSDate()
    for i in 1 ... 30 {

        let dateFormatter_week = NSDateFormatter()
            dateFormatter_week.dateFormat = "E"
        let dateFormatter_date = NSDateFormatter()
        dateFormatter_date.dateFormat = "dd"

        var str_week = dateFormatter_week.stringFromDate(date)
        var str_date = dateFormatter_date.stringFromDate(date)

        arr_week.append(str_week)
        arr_date.append(str_date)

        date = cal.dateByAddingUnit(.DayCalendarUnit, value: -1, toDate: date, options:
        nil)!
    }
   }

    func collectionView(collectionView: UICollectionView, numberOfItemsInSection
    section: Int) -> Int {
    return arr_date.count

}

func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath:
 NSIndexPath) -> UICollectionViewCell {

    var cell = collectionView.dequeueReusableCellWithReuseIdentifier("cell",
   forIndexPath: indexPath) as myViewCell


    cell.week_label.text = arr_week[indexPath.row]
    cell.date_label.text = arr_date[indexPath.row]

    return cell
}