Swift/UISwitch: how to implement a delegate/listener

Question

In my UITableViewController I have a custom cell which contains a switcher which is the following:

import Foundation
import UIKit

class SwitchCell: UITableV         


        

Answer 1

Another (Swift 3 or 4) method is to use didSet observer and drastically reduce code, like so-

In the class declaration declare a variable like below:

var switchFlag: Bool = false {
        didSet{               //This will fire everytime the value for switchFlag is set
            print(switchFlag) //do something with the switchFlag variable
        }
    }

Then you can have an IBAction on the UISwitch like so

@IBAction func switchChanged(_ sender: Any) {
        if self.mySwitch.isOn{
            switchFlag = true
        }else{
            switchFlag = false
        }
    }