[swift-evolution] [pitch] Variadic Arguments should accept Arrays

Tino Heth 2th at gmx.de
Mon Feb 27 15:20:19 CST 2017

> These is very unfortunate as a solution for “spreading” a collection or tuple so that It can be applied to function taking a variadic.
> It makes sense on the declaration site but not on the call site. 
> someFunc(@nonVariadic [1])  
> someFunc(@variadic [1]) 
> There is nothing special about variadic/ spreading that would warrant an attribute. 
> I think using attributes is not different than using a keyword like c# uses. 
> http://stackoverflow.com/questions/7580277/why-use-the-params-keyword <http://stackoverflow.com/questions/7580277/why-use-the-params-keyword>
> Do we really want to tag every array/tuple with a @variadic or @nonVariadic tag when packing and unpacking parameters?
> variadic/ spreading (AKA packing / unpacking ) is a well known concept to most languages. 

I have the impression there is a misunderstanding about the proposal:
It would not only make the variadics-syntax superflous, but also the whole splatting-magic.
There would only be functions that accept arrays, and you could freely choose to feed them a comma-seperated list instead.
The attribute would be written in the function declaration only — and we could even decide that it isn't needed at all, and simply accept lists wherever an array is expected.
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