[swift-evolution] [Idea] Find alternatives to `switch self`

[Brent Royal-Gordon]

> This can be done today with no syntax changes (you'd have to return optional or handle the nil case though):
> 






>   var description: String? {
>     return [
>       .Hearts: "♥️",
>       .Spades: "♠️",
>       .Diamonds: "♦️",
>       .Clubs: "♣️"
>     ][self]
>   }

"You have to handle the nil case" is a symptom of the real problem with this approach: you lose exhaustiveness checking.

-- 
Brent Royal-Gordon
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