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Quick use of undeclared type

I am currently trying to write a small iOS application in swift where I have the following classes:   masterTableViewController addViewControllerand deleteViewController, each of them is associated with a, as already mentioned, viewController. The TableViewController wizard must send some data using a predefined function:

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject!) {

  if(segue.identifier == "showDetails") {
    var selectedIndexPath:NSIndexPath = self.tableView.indexPathForSelectedRow()!

    var deleteViewController:deleteViewController = segue!.destinationViewController as deleteViewController

    deleteViewController.todoData = todoItems.objectAtIndex(selectedIndexPath.row) as NSDictionary
}

I want to send the data of the current row to the next one, according to the specified segue controller.

Here I get an error indicating that deleteViewController is not a type that can be assigned to a variable.

But I do not quite understand what the problem is now. Basically, this should work because I just want to create a new object of the type that my class belongs to and pass it to this controller.

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var dvc:deleteViewController = segue!.destinationViewController as deleteViewController
dvc.todoData = ...

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Google admob sdk.

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Open the right pane and check the Target Membership settings . They must be consistent for both classes.

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