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

[Joe Groff]

> On Dec 21, 2015, at 12:24 PM, Erica Sadun <erica at ericasadun.com> wrote:
> 
> I could be satisfied by such an approach.  I could even be more satisfied if
> 
>> enum Foo: ValueEnumerable { case A, B, C }
> 
> 
> were also essentially an alias for
> 
>> enum Foo: Int, ValueEnumerable { case A=0, B, C }
> 
> :)

If the value collection were sufficiently capable, you wouldn't necessarily need an implicit Int raw value; you could do `allValues.indexOf(.A)` to get the index for a case.

-Joe