SwiftUI perf tip

In lazy containers (List, LazyVStack), the view ForEach produces per element should be a *constant* number of views. An if inside the closure means 1 or 0 views, non-constant, and hits a slow path.

Wrap the condition in a VStack:

ForEach(namedFonts) { namedFont in
VStack {
if namedFont.name.count != 2 {
Text(https://namedFont.name)
}
}
}

or filter your data upfront.

Debug with: -LogForEachSlowPath YES

🔗 https://developer.apple.com/documentation/swiftui/foreach

Today #WWDC26 introduced a brand new version of the “alert” and ”confirmationDialog” modifiers that are not only simpler and more ergonomic, but they are more correct, preventing impossible states.

This is the 3rd iteration of the “alert” API in SwiftUI!

My WWDC26 session is out: Use SwiftUI with AppKit and UIKit 💡

I walk through incrementally adopting SwiftUI in an app you already have: using Observation to update your AppKit and UIKit views automatically, embedding SwiftUI into an existing view hierarchy, bringing gesture recognizers across, and adding full SwiftUI scenes without rearchitecting.

🔗https://developer.apple.com/videos/play/wwdc2026/272