Extending UIAlertController for cleaner code

ExtensionAlertController.swift

extension UIAlertController {
    func addActions(_ actions: [UIAlertAction]) {
        for action in actions {
	    self.addAction(action)
        }
    }
}

ViewController.swift

//
//  ViewController.swift
//  testAlertActionExtension
//
//  Created by Alec O'Connor on 11/26/17.
//  Copyright © 2017 Alec O'Connor. All rights reserved.
//

//  File is for demonstration

import UIKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
    }
    
    override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated)
        displayAlert()
    }

    func displayAlert() {
        let alertController = UIAlertController(title: "Are you sure", message: "Do you want to delete everything before saving?", preferredStyle: .alert)
        let action1 = UIAlertAction(title: "Save First", style: .default, handler: nil)
        let action2 = UIAlertAction(title: "Delete Everything", style: .destructive, handler: nil)
        let action3 = UIAlertAction(title: "Cancel", style: .cancel, handler: nil)
//        alertController.addAction(action1)
//        alertController.addAction(action2)
//        alertController.addAction(action3)
        alertController.addActions([action1, action2, action3])
        present(alertController, animated: true, completion: nil)
    }
}