[swift-evolution] [Pitch] Support for pure functions. Part n + 1.

[Matthew Johnson]

> On Feb 17, 2017, at 10:46 AM, David Sweeris via swift-evolution <swift-evolution at swift.org> wrote:
> 
> 
> On Feb 17, 2017, at 08:21, Adrian Zubarev via swift-evolution <swift-evolution at swift.org <mailto:swift-evolution at swift.org>> wrote:
> 
>> I haven’t yet read all the feedback in this topic but I’d like to throw some bikeshedding of mine into the room. :)
>> 
>> How about this?
>> 
>> Version 1: func(pure) …
>> Version 2: func label(…) ~> ReturnType
> Version 2 is going to upset those who use "~>" as an operator.
> 
> As the # of possible attributes grows, having an obvious grouping mechanism for them, like version 1, might be worthwhile simply to help make the list clearer. What about allowing "@(list, of, attributes)" instead of "@list, @of, @attributes”?

That would be a little bit awkward for attributes that are parameterized.  And if we did do this we should allow the parens to be omitted when there is only one attribute.

> 
> - Dave Sweeris
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