How to check if a view controller can perform a segue

Question

This might be a very simple question but didn\'t yield any results when searching for it so here it is...

I am trying to work out a way to check if a certain view co

Answer 1

Reference CanPerformSegue.swift

import UIKit

extension UIViewController{
    func canPerformSegue(identifier: String) -> Bool {
        guard let identifiers = value(forKey: "storyboardSegueTemplates") as? [NSObject] else {
            return false
        }
        let canPerform = identifiers.contains { (object) -> Bool in
            if let id = object.value(forKey: "_identifier") as? String {
                return id == identifier
            }else{
                return false
            }
        }
        return canPerform
    }
}