[swift-evolution] [pitch] Eliminate the "T1 -> T2" syntax, require "(T1) -> T2"

[Erica Sadun]

> On Apr 22, 2016, at 12:08 PM, Vladimir.S via swift-evolution <swift-evolution at swift.org> wrote:
> About the "Void".. I'm +1 on this idea, but asking myself if we can freely remove 'Void' from our language at all without any problem? Can't find the answer. It seems like we can, IMO using the syntax like () -> () is OK, clear and explicit, especially in "functional" word.

I like having Void as a typealias of (), and would prefer to retain it in the language if possible.
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