title: error Generic parameter 'ID' could not be inferred with DatePicker
body: <p>I have a couple of DatePickers in a view with the following code. Each DatePicker presents a digit, so "3" or "5". So for "3456" I have 4 DatePickers that can be changed individually.</p>
  
  <pre><code>struct DigitPicker: View {
  
      var digitName: String
      @Binding var digit: Int
  
      var body: some View {
          VStack {
              Picker(selection: $digit, label: Text(digitName)) {
                  ForEach(0 ... 9) {
                      Text("\($0)").tag($0)
                  }
              }.frame(width: 60, height: 110).clipped()
          }
      }
  }
  </code></pre>
  
  <p>I get an error "Generic parameter 'ID' could not be inferred". So I guess the reason is that $digit must conform to Identifiable(). But how do I do that???</p>