Not being able to run arbitrary code in SwiftUI view builders can be quite annoying. The other day I realized it’s possible to use self executing closures to work around this! Here’s a contrived example that creates a stretchy header: struct ScrollThing: View { var body: some View { ScrollView { VStack(spacing: 0) { GeometryReader { g in Color.white .offset(y: { let offsetY = g.frame(in: .global).minY return offsetY > 0 ?

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