Swift 4 solution for controlling 2 UISwitch elements and UILabels

UISwitches.swift

//
//  ViewController.swift
//  Basic
//
//  Created by Joseph Palumbo on 10/8/17.
//  Copyright © 2017 Joseph Palumbo. All rights reserved.
//

import UIKit

class ViewController: UIViewController {
    @IBOutlet weak var sw1: UISwitch!
    @IBOutlet weak var sw2: UISwitch!
    @IBOutlet weak var label1: UILabel!
    @IBOutlet weak var label2: UILabel!
    
    // controls first switch
    @IBAction func switchDidChange(_ sender: UISwitch) {
        if sw1.isOn {
            sw2.setOn(false, animated: true)
            label1.text = "ON"
            label2.text = "OFF"
        }
        else {
            sw2.setOn(true, animated: true)
            label1.text = "OFF"
            label2.text = "ON"
        }
    }
    
    // controls second switch
    @IBAction func switchDidChangeAlso(_ sender: UISwitch) {
        if sw2.isOn {
            sw1.setOn(false, animated: true)
            label2.text = "ON"
            label1.text = "OFF"
        } else {
            sw1.setOn(true, animated: true)
            label2.text = "OFF"
            label1.text = "ON"
        }
    }
  
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        
        if (sw1.isOn) {
            label1.text = "ON"
        } else {
            label1.text = "OFF"
        }
        
        if (sw2.isOn) {
            label2.text = "ON"
        } else {
            label2.text = "OFF"
        }

    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
        }


}