EC
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enum Barcode {
case upc(Int, Int, Int, Int)
case qrCode(String)
}
func foo(a : Barcode) {}
func bar(a : Barcode.upc) {}
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PS
enum Barcode {
case upc(UPCCode)
case qrCode(String)
}
func foo(a: Barcode)
func bar(a: UPCCode)