What’s the difference between Hstack and LazyHstack?
Asked on 08/04/2024
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The primary difference between HStack and LazyHStack in SwiftUI lies in how they handle their child views:
-
HStack: This is a container view that arranges its children in a horizontal line. All the child views are created and laid out immediately when the
HStackis initialized. This can be seen in the SwiftUI essentials session, where anHStackis used to place its children in a horizontal stack. -
LazyHStack: This is similar to
HStackbut with a key difference: it only creates and lays out its child views as they are needed. This means that if theLazyHStackis used within a scrollable view, only the views that are currently visible (or about to become visible) are created and laid out. This can significantly improve performance when dealing with a large number of child views.
In summary, use HStack for small, static collections of views where performance is not a concern, and use LazyHStack for large or dynamic collections of views where you want to optimize performance by loading views lazily.
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