SwiftUI: Nest views recursively - swiftui

Question

I try to create a View which is a circle and within the circle there should be added more circles until my recursive function ends. E.g. if I call createSubCircle(depth: 4) I expect 4 circles within itself, where each sub circle should have 80% of it's parent.
All circles must have the same center.
The code below returns
Function opaque return type was inferred as 'ZStack<_ConditionalContent<GeometryReader<TupleView<(some View, some View)>>, EmptyView>>', which defines the opaque type in terms of itself
struct ContentView: View {
var body: some View {
createSubCircle(depth: 4)
}
#ViewBuilder
func createSubCircle(depth: Int) -> some View {
ZStack {
if depth > 0 {
GeometryReader{proxy in
Circle()
.strokeBorder(.green, lineWidth: 4)
.frame(width: proxy.size.width*0.8, height: proxy.size.height*0.8, alignment: .center)
createSubCircle(depth: depth-1)
}
}
else{
EmptyView()
}
}
}
}

Answer 1

why don't use ForEach?
#ViewBuilder
func createSubCircle(depth: Int) -> some View {
ZStack {
ForEach(0..<depth, id:\.self) {dep in
GeometryReader{proxy in
let width = proxy.size.width * (pow(0.8, CGFloat(dep)))
let height = proxy.size.height * (pow(0.8, CGFloat(dep)))
ZStack {
Circle()
.strokeBorder(.green, lineWidth: 4)
.frame(width: width, height: height, alignment: .center)
.frame(maxWidth: .infinity, maxHeight: .infinity)
}
}
}
}
}