Promises simplify asynchronous programming, freeing you up to focus on the more important things. They are easy to learn, easy to master and result in clearer, more readable code. Your co-workers will thank you.
UIApplication.shared.isNetworkActivityIndicatorVisible = true
firstly {
when(URLSession.dataTask(with: url).asImage(), CLLocationManager.promise())
}.then { image, location -> Void in
self.imageView.image = image
self.label.text = "\(location)"
}.always {
UIApplication.shared.isNetworkActivityIndicatorVisible = false
}.catch { error in
self.show(UIAlertController(for: error), sender: self)
}
PromiseKit is a thoughtful and complete implementation of promises for any platform with a swiftc, it has excellent Objective-C bridging and delightful specializations for iOS, macOS, tvOS and watchOS. It is a top-100 pod used in many of the most popular apps in the world.
