What is New in SwiftUI, WWDC 22 Article

CustomLayout.swift

@State var changeLayout: Bool = false

var body: some View {
    let layout = changeLayout ? AnyLayout(HStack()) : AnyLayout(VStack())

    VStack {
        layout {
            Text("First")
            Text("Second")
        }

        Button {
            self.changeLayout.toggle()
        } label: {
            Text("Change Layout")
        }
    }
}