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

David Sweeris davesweeris at mac.com
Fri Feb 17 10:55:29 CST 2017


> On Feb 17, 2017, at 08:49, Matthew Johnson <matthew at anandabits.com> wrote:
> 
> 
>> 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> 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.

Are there any parameterized attributes other than "@inline(always|never)"?

> And if we did do this we should allow the parens to be omitted when there is only one attribute.

Agreed.

- Dave Sweeris 
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