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Swift Functional Programming - Second Edition by Dr. Fatih Nayebi

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IBActions

We will need to define two IBAction, one to add a new item to the list and the other to filter the items:

// MARK: Actions extension MasterViewController {     @IBAction func addTapped(_ sender: UIBarButtonItem) {         let alertController = UIAlertController(title: "Create",                               message: "Create a new todo item",                               preferredStyle: .alert)         alertController.addTextField {             textField in             textField.placeholder = "Id"         }         alertController.addTextField {             textField in             textField.placeholder = "Name"         }         alertController.addTextField {             textField in             textField.placeholder = "Description"         }         alertController.addTextField {             textField in             textField.placeholder = "Notes"         }         alertController.addAction(UIAlertAction(title: "Cancel", style: .cancel) { _ ...

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