Why it worked
The video showcases a visually appealing UI animation created with SwiftUI, which is a popular framework for iOS development. The combination of code and live preview makes it educational and engaging for developers interested in app design.
Summary
The video shows a SwiftUI code snippet on the left and a phone screen on the right displaying a loading animation. The animation progresses through several stages, including a curved line and three dots, before showing a "Preview Crashed" message and then resuming the animation.