I have a SubView that I wrote to avoid redundant code. It has a generic @Binding var that is presented to the user via string Interpolation (the view will be instantiated with a String or an Int). Because it is used in string interpolation, I get the error No exact matches in call to instance method 'appendInterpolation' if I don't have it conform to a protocol that lets swift know that the type can be used in string interpolation. Doing a little research, I found StringInterpolationProtocol and ExpressibleByStringInterpolation as potential candidates, but Int doesn't conform to ExpressibleByStringInterpolation and String doesn't conform to StringInterpolationProtocol. Given that both Strings and Ints can be used in string interpolation, is there another protocol that they both conform to that I can use? Essentially what I want is to figure out what fits SomeProtocol here: struct MySubView<T: SomeProtocol>: View { @Binding var theVariable: T var body: some View { HStack { Text("This part isn't important") Text("But this is \(theVariable)") } } Or am I thinking of this the wrong way and there's a better way to go about this? Is an opaque type a better way to go? Thanks!