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

class test {      private init() {}      static let shared = test()      func test() {      }  }  let closure: ()->void = {     test.shared.test() }  closure() 

the code above simple. want know if have mark weak or unowned singleton. , why?

no, because self not used (explicitly or implicitly) in closure.