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Boost Your App’s Performance with Lazy Stacks in SwiftUI

Published at
12/27/2024
Categories
swifui
swift
ios
mobile
Author
divyesh vekariya
Categories
4 categories in total
swifui
open
swift
open
ios
open
mobile
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Boost Your App’s Performance with Lazy Stacks in SwiftUI

Did you know that improper use of SwiftUI stacks can lead to performance issues in your app? 🧐

When building scrollable layouts with VStack or HStack, you might notice lag or slow rendering when dealing with large data sets. That’s where Lazy Stacks come in!

Instead of rendering all views at once, LazyVStack and LazyHStack only create the views currently visible on the screen. This drastically improves memory usage and keeps your app smooth.

Here’s an example:

ScrollView {  
    LazyVStack {  
        ForEach(0..<1000) { index in  
            Text("Item \(index)")  
                .padding()  
                .background(Color.gray.opacity(0.2))  
                .cornerRadius(8)  
        }  
    }  
} 

✨ Why use Lazy Stacks?

Efficiency: Only the visible views are loaded into memory.
Scalability: Handle thousands of items seamlessly.
Flexibility: Works perfectly within ScrollView.
❓ How do you decide between using VStack and LazyVStack in your projects?

Let me know in the comments! 👇

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