Module 2 of 3 in Networking & Concurrency in SwiftUI

Concurrency Demystified

Jun 20 2024, Swift 5.10, iOS 17, Xcode 15.3
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Unleash the power of concurrency! This module will equip you with the tools and techniques to handle multiple tasks simultaneously, keeping your app responsive and efficient. Discover the fundamentals of async/await, conquer network calls, and handle background tasks, all while ensuring a smooth, responsive user experience. By Alessandro Di Nepi.

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EXPERIENCE
Beginner level
EST TIME TO COMPLETE
1 hr, 16 mins
CONTENT
3 lessons
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Module outcomes

  • Understand what asynchronous programming is using async/await and how it fits within SwiftUI.
  • Implement network requests and background tasks without blocking the UI.
  • Integrate asynchronous operations seamlessly into SwiftUI views.

Covered concepts

  • Concurrency
  • async/await
  • Managing asynchronous data updates in SwiftUI

Module content

1
The Power of Async/Await Lesson (26 mins)

In this first lesson, you’ll delve into mastering the fundamental principles of async/await, a powerful paradigm in modern asynchronous programming. You’ll learn to identify and mark asynchronous functions using the async keyword, understanding when and where to apply it to signal asynchronous execution. Additionally, you’ll explore the transformative power of the await keyword, mastering its ability to pause execution until asynchronous operations are complete.

 Start
Introduction • Start Reading · 1 min
Asynchronous Programming Fundamentals Reading · 6 mins
Asynchronous Programming Demo Video · 5 mins
Discovering Async/Await Reading · 9 mins
Refactoring With Async/Await Demo Video · 4 mins
Conclusion Reading · 1 min
Quiz for Lesson 1 6 questions
2
Taming Network Calls with Async/Await Lesson (23 mins)

In this lesson, you’ll learn how to implement network calls using URLSession‘s new async/await APIs. You’ll focus on parsing network responses at the end of the session and also on how to handle updates during the session to add visual feedback to the user. Finally, you’ll ensure the downloaded data are presented correctly in the UI, providing a seamless and glitch-free user experience.

 Start
Introduction • Start Reading · 1 min
Discovering URLSession Async API Reading · 16 mins
Image Downloader Demo Video · 6 mins
Conclusion Reading · 1 min
Quiz for Lesson 2 6 questions
3
Background Tasks Made Easy with Async/Await Lesson (27 mins)

In this lesson, you’ll learn to execute background tasks using the SwiftUI Task instructions and how to assign the proper priority to the task. You’ll explore techniques for safely updating the user interface with background task results and maintaining a seamless and responsive user experience.

 Start
Introduction • Start Reading · 1 min
SwiftUI Background Tasks Reading · 18 mins
App Improvements Demo Video · 7 mins
Conclusion Reading · 1 min
Quiz for Lesson 3 6 questions