Automatically Synthesize Identifiable Conformance for Enums

Evolution Discussion
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2

In theory, it sounds nice—this can be handy when you know you won't be dealing with any duplicates. In actuality, enumerations (and other Hashable types) are unsuitable for the semantics of Identifiable, in the general case. This should be better documented.

E.g. try interacting with this nightmare:

import SwiftUI

struct UnusableView: View {
  enum Case: Identifiable {
    case a, b
    var id: some Hashable { self }
  }

  @State var cases: [Case] = [.a, .b, .a, .b]

  var body: some View {
    List($cases, editActions: .move) { $case in
      Text("\(`case`)" as String)
    }
  }
}

#Preview(body: UnusableView.init)
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