SwiftUI Conditionally disable modifier

Question

So say I want to conditionally enable or disable a modifier on a view such as matched geometry effect? As silly as this looks, how would I do this?

Image("Test")
   .scaleEffect(self.selectedImageScale)
   .offset(self.selectedImageOffset)
   .aspectRatio(contentMode: .fit)
if disabled {
   .matchedGeometryEffect(id: selectedImage.id, in: self.namespace)
}

Answer 1

You can achieve it with a simple extension on the View:

extension View {

    @ViewBuilder
    public func `if`<T: View, U: View>(
        _ condition: Bool,
        then modifierT: (Self) -> T,
        else modifierU: (Self) -> U
    ) -> some View {

        if condition { modifierT(self) }
        else { modifierU(self) }
    }
}

Now you can use it like:

Image("Test")
   .scaleEffect(self.selectedImageScale)
   .offset(self.selectedImageOffset)
   .aspectRatio(contentMode: .fit)

   .if(disabled) { view in
       view.matchedGeometryEffect(id: selectedImage.id, in: self.namespace)
   } else { $0 } // returns unmodified view