Do I need [weak self] or [unowned self] for a Singleton in the Closure?

Question

class Test {

    private init() {}

    static let shared = Test()

    func test() {

    }

}

let closure: ()->Void = {
    Test.shared.test()
}

closure()

The code above is simple. But i want to know if I have to mark weak or unowned to the Singleton. And why?

Answer 1

不，因为在该闭包中未使用（显式或隐式） self 。