ReactiveCocoa is a functional reactive programming framework and Cocoa UI binding layer. It provides a library for composing asynchronous data streams and managing application state through signals and functional operators.
The framework functions as an Objective-C data binding library that links object properties and method calls to reactive streams using runtime dynamism and swizzling. It includes a utility to convert traditional key-value observation notifications into composable streams for synchronized state tracking.
The project covers reactive UI programming by connecting interface elements to asynchronous data streams and capturing user interactions. It enables reactive state management and asynchronous event handling by using primitive building blocks to define model logic.