Singleton and init with parameter

Question

I want to use the singleton pattern in my class which has a private init with parameter. It also has a class function called setup which configures

Answer 1

class Policies{
    static let shared = makeShared!();
    static var makeShared:(()->Policies)?;

    init(_ launchOptions:[UIApplicationLaunchOptionsKey:Any]?) {
        super.init();
        //initialization
    }
}
extension AppDelegate:UIApplicationDelegate{
    public func application(_ app: UIApplication, open url: URL, options: [UIApplicationOpenURLOptionsKey : Any]) -> Bool{
        Policies.makeShared = { Policies(launchOptions) }
    }
}