Why am I getting this error? There's another post similar to this, but it doesn't have any answers. import SwiftUI struct ContentView: View {          @State var clicked = 0          var numberValue = [1: "won", 9: "Nein!", 69: "nice.", 123: "321", 666: "ILLUMINATI", 6969: "very nice."]          func addOne() {         clicked += 1         print(clicked)     }     var body: some View {         VStack{             Text("Clicker: The Game")                 .font(.largeTitle)                 .fontWeight(.bold)                 .multilineTextAlignment(.center)                 .offset(y: -225)                          Text(numberValue[self.clicked] ?? String(self.clicked))                 .font(.system(size: 69))                 .offset(y: -125)                          Button(action: addOne) {             Text("Tap me!")                 .offset(y: -10)                 .font(.system(size: 30))                 .background(RoundedRectangle(cornerRadius: CGFloat, style: RoundedCornerStyle = .circular))                          }                      }     } } struct ContentView_Previews: PreviewProvider {     static var previews: some View {         ContentView()     } }

I just want to share it with them. My app is nothing serious. It's just for fun.

I have a late 2012 iMac running Catalina. I find it really weird that Xcode 12 runs slowly because I can run Xcode 11 fine. It takes forever to build (around 2 minutes), simulate (around 5 minutes), and preview (around 3 minutes) on Xcode 12. Heck, I don’t even bother to toggle the live preview option. But, this wasn’t the case when I still used Xcode 11. Will Apple be dropping support for older iMacs? How can I make it run faster? Specs: i5 3.2 Ghz Quad-Core 8 GB RAM 16MHz DDR3 1 TB storage GTX 675MX 1 GB

My Mac isn’t compatible with Big Sur, and I just started learning Swift and SwiftUI. Is it possible to develop apps on the latest iPadOS beta on macOS Catalina?