[swift-evolution] [Pitch] Allow use of the name "default" for enum cases and function names

[Jacob Bandes-Storch]

Isn't this already done, at least for enum cases? I'm pretty sure I've seen
discussion of this before, and I thought it might've gotten implemented.
On Fri, Jun 17, 2016 at 1:45 PM E. Maloney via swift-evolution <
swift-evolution at swift.org> wrote:

> While upgrading to Swift 3, I noticed that I had a few enums with cases
> named .Default that, after being converted to lowercase, now need to be
> rendered using the ugly .`default` notation.
>
> I also noticed something similar while reading the docs for
> NotificationCenter (the NSNotificationCenter replacement, that is, not the
> NotificationCenter that governs the notification center UI); “default”
> can’t be used as a function name without escaping, so the declaration is:
>
> class func `default`()
>
> It seems to me that in the case of function names and enum cases, the
> parser should be able to unambiguously distinguish between the Swift
> keyword “default” and a user-defined name “default”, since IIRC the keyword
> “default” can only be used in parameter lists for generated headers and as
> the last item in a switch statement.
>
> (Perhaps this is also another argument in favor of using “case _:” in
> place of “default:” in a switch statement.)
>
> What do you think? Is there any reason this *wouldn’t* be feasible?
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