(iOS) Extensions with computed properties

VCExtension.swift

extension UIViewController {
    private static var _myComputedProperty = [String:Bool]()
    
    var myComputedProperty:Bool {
        get {
            let tmpAddress = String(format: "%p", unsafeBitCast(self, to: Int.self))
            return UIViewController._myComputedProperty[tmpAddress] ?? false
        }
        set(newValue) {
            let tmpAddress = String(format: "%p", unsafeBitCast(self, to: Int.self))
            UIViewController._myComputedProperty[tmpAddress] = newValue
        }
    }
}