Get remote or default image

UIImage+.swift

// somewhere in your class
// where you have declared instance of UIImageView as _imageView
func test() {
	UIImage.getRemote(path: "path_to_image", default: "image_name") {[weak self] value in
		DispatchQueue.main.async {[weak self] in
			guard let s = self else { return }

			s._imageView.image = value
			s._imageView.sizeToFit()
		}
	}
}
...
extension UIImage {
    class func getRemote(path: String, default defaultName: String, completion: @escaping (UIImage?) -> Void) {
        load(path: path) { value in
            var image = value
            if image == nil {
                image = UIImage(named: defaultName)
            }
            
            completion(image)
        }
    }
    
    class func load(path: String, completion: @escaping (UIImage?) -> Void) {
        guard let url = URL(string: path) else {
            return completion(nil)
        }
        
        let urlSession = URLSession(configuration: URLSessionConfiguration.default)
        let task = urlSession.dataTask(with: url) { data, urlResponse, error in
            guard let data = data, let image = UIImage(data: data) else {
                completion(nil)
                return
            }
            
            completion(image)
        }
        
        task.resume()
    }
}