[swift-evolution] Proposal: Contiguous Variables (A.K.A. Fixed Sized Array Type)

Chris Lattner clattner at apple.com
Thu Jan 28 23:50:52 CST 2016

> On Jan 28, 2016, at 9:41 PM, Félix Cloutier <felixcca at yahoo.ca> wrote:
> I think that (4 x Int) needs to be syntax sugar for (Int, Int, Int, Int). Not having them the same would introduce awkward cases into the language.

Agreed.  This means that:

   let values: (4 x Int)(repeatedValue: 0) // Is this possible?

will not be possible.

> Because of that, I also think that forcing people to use the subscript would have some awkward consequences. What if I have a func<T, U> that uses a (T, U) tuple and both T and U happen to be the same type?

I don’t understand this concern.

> So I think that tuples whose elements all have the same type should get a subscript but shouldn't lose direct field access. 



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