This was/is being discussed at length in this thread: 
https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20151214/002742.html
 
<https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20151214/002742.html>



> On Dec 17, 2015, at 10:27 PM, Matthew Johnson via swift-evolution 
> <[email protected]> wrote:
> 
> Swift currently offers dot shorthand for static members of type Self in type 
> contexts expecting a value of the type in question.  This is most commonly 
> used with enum cases.
> 
> Swift does not currently offer shorthand for instance members.  Introducing a 
> shorthand for instance members would improve clarity and readability of code 
> in common cases:
> 
> anArray.map{$0.anInstanceMethod()}
> 
> becomes:
> 
> anArray.map(.anInstanceMethod())
> 
> This shorthand would work in typing contexts expecting a single argument 
> function.  It would allow abbreviated access to any visible instance property 
> getter or instance method on the type of the argument.  Of course the return 
> type would need to match the return type expected by the context or a type 
> mismatch compiler error would occur.
> 
> The readability advantage is arguably small but it does exist.  The feature 
> also aligns very well with an existing language feature.
> 
> I think it’s an interesting idea and am wondering whether others feel like it 
> is something worth pursuing or not.
> 
> Matthew
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