How to return VStack or HStack in SwiftUI

Issue #613

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struct VOrH<Content>: View where Content: View {
let isVertical: Bool
let content: () -> Content

init(isVertical: Bool, @ViewBuilder content: @escaping () -> Content) {
self.isVertical = isVertical
self.content = content
}

var body: some View {
makeContent()
}

private func makeContent() -> some View {
if isVertical {
return VStack(spacing: 0) {
content()
}.eraseToAnyView()
} else {
return HStack(spacing: 0) {
content()
}.eraseToAnyView()
}
}
}
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