[swift-evolution] Proposal: Enum 'count' functionality

[Brent Royal-Gordon]

> I’ve put a proposal up on GitHub to add a cases ‘count’ functionality to Enums for the Swift language
> https://gist.github.com/andyyhope/2fc5b6bee8ee1346f688

I think we'd be much better off having a list of all cases. That would make this feature useful for enums which don't have a raw type, or don't use Int as their raw type, or don't use sequential raw values for their cases.

That approach has been discussed before, but not formally proposed.

-- 
Brent Royal-Gordon
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