Blog_UnownedVsWeak_tryingWeakInsideClosure.swift

func tryWeak() {
        // let's get image data from server to load it in our imageview.
        self.getData(from: URL.init(string: self.imageToBeShown)!) { [weak self] (data, response, error) in
            DispatchQueue.main.async {
                self?.imageView.image = UIImage.init(data: data!)
            }
        }
}