IOS SWIFT removing an item from an Array does not work in my TableView

Question

I have a notifications class with the following function (ed of post) that returns an array, I call the function (getListOfNotifications) below and get an array of data from my main ViewController. In my main controller I define the array like such:

var arr = []
arr = getListOfNotifications(“\(userIdInt)”)

Then in my prepareForSegue I pass the array to a tableView

let secondVC = segue.destinationViewController as       NotificationsTableViewController
secondVC.notificationsArray = arr

Then in the Tableview I have the following, which was populated from above,

var notificationsArray =  []

then in my tableview when I try to do the following delete, I can't use the removeObjectAtIndex on the array, but I also can't define the array as NSMutableArray. What can I do to remove the item from the array? I tried redefining it any which way possible and I can;t get anything to work.

override func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
    if editingStyle == .Delete {
    notificationsArray.removeObjectAtIndex(indexPath.row)
    tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: .Fade)
 }

This is the function in my Notifications class that I populate from a web service:

func getListOfNotifications(item:String)->Array<Notifications> {

    var notificationArray:[Notifications] = []

     println("==== Notifications ====")

    var url=NSURL(string:”http://www.mywebsite.com/NotificationListJSON.php?id="+item)

    var data=NSData(contentsOfURL:url!)

    if let json = NSJSONSerialization.JSONObjectWithData(data!, options: nil, error: nil) as? NSDictionary {
        if let feed = json["notifications"] as? NSArray {
            for entry in feed {

                 var notifications = Notifications()
                 notifications.desc = entry["description"] as String
                 notifications.name = entry["name"] as String
                 notifications.iid = entry["iid"] as String
                 notifications.distance = entry["distance"] as String

                 notificationArray.append(notifications)
            }
        }
    }

    return notificationArray
}

Answer 1

If you know what the array is going to be, why are you declaring it as an NSArray in the first place. Why not:

var notificationsArray =  [Notifications]()

Then you'll have a swift array of Notifications, which is mutable and you should be able to remove.

Answer 2

removeObjectAtIndex is a method of NSMutableArray , but you are working with a Swift array (declared as var , so also mutable).

Use the standard remove method described in the Swift Standard Library References .

notificationsArray.removeAtIndex[indexPath.row]