ReactiveCocoa

ReactiveCocoa is a framework for building applications that efficiently handle asynchronous data and events. It uses a programming approach called reactive programming, where data streams (like user actions, network responses, or timers) are observed and automatically trigger updates. Instead of writing complex code to manage these events separately, ReactiveCocoa lets developers create relationships between data sources and UI components, ensuring they stay in sync. This leads to more predictable, maintainable code by treating data changes and user interactions as continuous, flowing signals that reactively update the application as needed.