What is RX Swift?

RxSwift is a Swift implementation of Reactive Extensions (Rx), a programming paradigm for composing asynchronous and event-based programs by using observable sequences. It simplifies dealing with asynchronous operations, data streams, and UI events by providing a unified and declarative way to handle them. It's commonly used in iOS and macOS development for managing user interface events, network requests, and data processing pipelines, making code more readable, maintainable, and less prone to errors compared to traditional imperative approaches involving callbacks and delegates.