[swift-evolution] [Discussion] Removing tuple labels from the type signature

[Chris Lattner]

> On Feb 4, 2016, at 3:26 PM, Maximilian Hünenberger <m.huenenberger at me.com> wrote:
> 
> Is this behavior intended?
> 
> What disadvantage do I have if a conversion from (a: Int, b: Int) to (x: Int, y: Int) is allowed?

If that were allowed, then it also stands to reason that a conversion from “(a: Int, b : Int)” to “(b: Int, a : Int)” would also work… but would not swap the elements.  IMO, it is best to disallow things misleading things like this.

-Chris

> 
> 
> Thank you for clarification
> - Maximilian
> 
>> Am 05.02.2016 um 00:11 schrieb Chris Lattner <clattner at apple.com>:
>> 
>> 
>>> On Feb 4, 2016, at 10:57 AM, Maximilian Hünenberger <m.huenenberger at me.com> wrote:
>>> 
>>> Is there a reasoning behind treating (Int, Int) and (lhs: Int, rhs: Int) as separate types?
>> 
>> I’m not sure what you mean by “separate types”.  One has labels, one does not, so they are clearly separate.
>> 
>> Further, "(Int, Int)” needs to be compatible/convertible to "(a : Int, b : Int)”, but “(a : Int, b : Int)” should not be convertible to “(x : Int, y : Int)”.
>> 
>>> Is there a connection to your tuple splat proposal?
>> 
>> No connection at all.
>> 
>> -Chris
>> 
>