Lazy Loading Heavy Content
Defer expensive work until it is visible.
Build Only What Is Visible
Rendering a thousand off-screen rows is wasteful. Lazy containers build views only as they scroll into view, saving huge amounts of work.
Eager vs Lazy Stacks
A plain VStack builds every child up front. Inside a ScrollView with many items, that startup cost can freeze the screen.
All lessons in this course
- How SwiftUI Recomputes Views
- Avoiding Unnecessary Redraws
- Lazy Loading Heavy Content
- Profiling with Instruments