Downloading images from a URL for a UIImageView with caching

UIImageView+ImageDownloading.swift

extension UIImageView {
    /// Loads image from web asynchronosly and caches it, in case you have to load url	
    /// again, it will be loaded from cache if available	
    /// - parameter url: URL for the image	
    /// - parameter placeholder: Placeholder image to use while image is downloading, defaults to nil	
    /// - parameter template: True to use template image rendering mode, false to use original image	
    ///                        rendering mode, defaults to false	
    func load(url: URL, placeholder: UIImage? = nil, template: Bool = false) {	
        let cache = URLCache.shared	
        let request = URLRequest(url: url)	
        if let data = cache.cachedResponse(for: request)?.data, let image = UIImage(data: data) {	
            self.image = image.withRenderingMode(template ? .alwaysTemplate : .alwaysOriginal)	
        } else {	
            self.image = placeholder	
            URLSession.shared.dataTask(with: request, completionHandler: { (data, response, error) in	
                if let data = data,	
                    let response = response, ((response as? HTTPURLResponse)?.statusCode ?? 500) < 300,	
                    let image = UIImage(data: data) {	
                    let cachedData = CachedURLResponse(response: response, data: data)	
                    cache.storeCachedResponse(cachedData, for: request)	
                    DispatchQueue.main.async {	
                        self.image = image.withRenderingMode(template ? .alwaysTemplate : .alwaysOriginal)	
                    }	
                }	
            }).resume()	
        }	
    }
}