@swiftbot
import SwiftUI extension View { func when<NewView: View>(_ cond: Bool, @ViewBuilder then apply: (Self) -> NewView) -> some View { Group { if cond { apply(self) } else { self } } } } struct MyView: View { var body: some View { Text("a") .when(true) { $0 } .when(true) { view in VStack { Text("begin") view Text("end") } } } } struct MyView_Preview: PreviewProvider { static var previews: some View { MyView() } }