Day 1: Introduction to State Management and Combine

Session 1: Understanding State Management in iOS

• Overview of state management challenges in iOS.
• Introduction to imperative vs. declarative programming.
• Understanding traditional approaches vs. reactive programming.

Session 2: Introduction to Combine Framework

• What is Combine, and why use it?
• Understanding Publishers, Subscribers, and Operators.
• Implementing Just, Future, and PassthroughSubject.

Session 3: Handling Asynchronous Operations with Combine

• Managing network requests with URLSession and Combine.
• Using decode() and map() for API response handling.
• Error handling in Combine using catch() and retry().

Day 2: Implementing MVVM with Combine

Session 1: Introduction to MVVM Architecture

• Understanding Model, View, and ViewModel (MVVM).
• Benefits of using MVVM over MVC.
• Setting up MVVM in an iOS project.

Session 2: Connecting Combine with MVVM

• Using @Published properties in ViewModel.
• Binding UI components with Combine.
• Implementing data flow from Model to View using Combine.

Session 3: Managing UI State with Combine

• Handling loading states, error states, and empty states.
• Using Combine with SwiftUI and UIKit.
• Creating custom Publishers and Subscribers.

Day 3: Advanced State Management and Hands-On Project

Session 1: Advanced Combine Features

• Using CombineSchedulers for thread management.
• Implementing multiple data streams in an app.
• Working with CombineLatest, Merge, and Zip operators.

Session 2: Best Practices for MVVM and State Management

• Structuring ViewModels for scalability.
• Avoiding memory leaks with Combine cancellables.
• Debugging and optimizing Combine-based state management.

Session 3: Hands-On Project: Building an MVVM-Based App with Combine

• Implementing MVVM and Combine in a real-world app.
• Fetching live data from an API and updating the UI.
• Debugging, testing, and optimizing app performance.