Build a strong foundation in Combine and master real-world async data handling in Swift using Publishers and Subjects.
Combine is Apple’s powerful framework for handling asynchronous data, event streams, and state updates in a declarative way. This course takes you step by step from the basics of reactive programming to building complete, data-driven SwiftUI apps using Combine for iOS development.
What you’ll learn
- Understand Combine’s purpose – Learn what Combine is and how it improves async programming..
- Grasp core concepts – Master Publishers, Subscribers, Operators, and Subjects..
- Use built-in publishers – Work with Just, Future, Timer, and network publishers..
- Handle async streams – Manage continuous or delayed data updates..
- Differentiate subjects – Know when to use PassthroughSubject vs. CurrentValueSubject..
- Transform and decode data – Use Combine operators to process and decode JSON..
- Integrate with SwiftUI – Bind Combine pipelines to SwiftUI state properties..
- Manage subscriptions – Control stream lifecycles and prevent memory leaks..
- Apply MVVM with Combine – Build reactive ViewModels that drive SwiftUI views..
- Debug reactive flows – Simulate network streams and trace Combine pipelines..
Course Content
- Introduction –> 7 lectures • 8min.
- Making an App that uses a Publisher instead of subjects. –> 5 lectures • 50min.
- Making an app that uses a PassThroughSubject. –> 3 lectures • 36min.
- Making an App Using a CurrentValueSubject –> 6 lectures • 1hr 10min.
- Course Summary. –> 1 lecture • 1min.
Requirements
Combine is Apple’s powerful framework for handling asynchronous data, event streams, and state updates in a declarative way. This course takes you step by step from the basics of reactive programming to building complete, data-driven SwiftUI apps using Combine for iOS development.
You’ll start by learning what Publishers, Subscribers, and Operators are—and how they connect data flow through your app. From there, you’ll explore two core types of Subjects, PassthroughSubject and CurrentValueSubject, to understand when to broadcast new events and when to manage application state.
Through clear explanations and real-world coding projects, you’ll learn how to:
- Use Combine to handle network requests, decode JSON, and update SwiftUI views seamlessly.
- Simplify async code by replacing completion handlers and async/await with data pipelines.
- Understand the difference between stateful and stateless data streams.
- Integrate Combine effectively within the MVVM architecture for scalable applications.
- Manage subscriptions, memory, and data flow in reactive apps efficiently.
By the end of this course, you’ll have the knowledge and confidence to use Combine effectively in your Swift projects—making your code cleaner, more scalable, and ready for modern iOS development with reactive programming principles.
Perfect for: Intermediate Swift developers, SwiftUI learners, or anyone who wants to master Combine’s core concepts and apply them in real-world iOS apps.