How to destroy a singleton in Swift

Question

How to destroy a singleton in Swift?

I create a singleton like this:

class MyManager  {
    private static let sharedInstance = MyManager()
    cla         


        

Answer 1

If you want to be able to destroy it, make it an optional. And don't use ! to force unwrap like in brduca answer: it wouldn't be thread safe. This answer is safer:

class MyManager  {
    private static var sharedInstance: MyManager?
    class var sharedManager : MyManager {
        guard let sharedInstance = self.sharedInstance else {
            let sharedInstance = MyManager()
            self.sharedInstance = sharedInstance
            return sharedInstance
        }
        return sharedInstance
    }
    class func destroySharedManager() {
        sharedInstance = nil
    }
}

Basic usage:

// do something with singleton
AnyTestClass.sharedManager.doSomething()
// destroy singleton
AnyTestClass.destroySharedManager()
// do something with new singleton
AnyTestClass.sharedManager.doSomething()