Combine Framework

Combine is a declarative Swift framework from Apple for processing values over time, enabling reactive programming in iOS, macOS, watchOS, and tvOS applications. It provides publishers to emit sequences of values and subscribers to receive and handle those values, along with operators to transform, filter, and combine data streams. It is built to work seamlessly with Swift and Apple's ecosystem, often used with SwiftUI for state management and asynchronous event handling.

Also known as: Combine, Apple Combine, Combine Swift, Combine Framework Swift, Combine Reactive

Why learn Combine Framework?

Developers should learn Combine when building Apple platform apps that require reactive or asynchronous data flow, such as handling user input, network requests, or real-time UI updates. It is particularly valuable in SwiftUI-based projects for managing state and binding data to views, and it simplifies complex asynchronous code by replacing traditional patterns like delegates, closures, and NotificationCenter with a unified, composable approach.

Learning Resources

• docs: Apple Developer Documentation: Combine
• tutorial: Ray Wenderlich: Combine Tutorial
• tutorial: Hacking with Swift: Combine in SwiftUI
• tutorial: Swift by Sundell: Combine
• course: Udemy: Combine Framework with Swift