[swift-evolution] Pitch: disallow `()` from Switch statement case satisfaction

[Erica Sadun]

I thought this was long gone but today I found out it is still legal:

switch i {
case 4 ... 6: ()
case 3: print("Here")
default: break
}

Is there a motivating factor for keeping this in the language? The compiler picks up on Void and emits an error. You'd think () would produce the same results but it doesn't.

-- Erica

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