Swift : Introduction to Combine Framework.

Declarative programming has gained a lot of interest in the software industry during the last years. It’s being already used in iOS a long time using external libraries like RXSwift and ReactiveCocoa. So this was a matter of time until apple creates a native library for that.

Now iOS 13 comes with a new UI framework, SwiftUI, which is based on a declarative framework called Combine. It…