[swift-evolution] What are the rules for including @ with attributes/keywords and the possibility of removing it

[Brandon Knope]

> On Jan 11, 2016, at 1:14 PM, Joe Groff <jgroff at apple.com> wrote:
> 
> 
>> On Jan 11, 2016, at 9:49 AM, Brandon Knope via swift-evolution <swift-evolution at swift.org <mailto:swift-evolution at swift.org>> wrote:
>> 
>> @noescape
>> @autoclosure
>> 
>> Is there a particular reason why there is a @ prepending these attributes/keywords?
>> 
>> 
>> func test(@autoclosure test: () -> Bool) -> Void
>> 
>> vs.
>> 
>> func test(autoclosure test: () -> Bool) -> Void 
>> 
>> It seems cleaner/clearer without @ sprinkled everywhere, but what is the rationale behind needing the @ symbol?
> 
> Without the '@', you're declaring a parameter labeled 'autoclosure'.
> 
> -Joe
> 

What about “inout” then?

And duh! I completely forgot about parameter labels -_-
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