[swift-evolution] [Pitch] Remove type inference for associated types
Charlie Monroe
charlie at charliemonroe.net
Sun Jun 26 23:39:16 CDT 2016
I'm not quite what would be the behavior of this in the proposal:
extension IntBag : StringBag {
associatedtype Element = Element
}
since both IntBag and StringBag are classes - would IntBag use StringBag's code, but replace String with Int? Or would it just contain both
func object(at index: Int) -> Int?
and
func object(at index: Int) -> String?
if that is the case, what if the protocol contains a non-generic function like
func countElements() -> Int
?
> On Jun 25, 2016, at 8:35 PM, Austin Zheng via swift-evolution <swift-evolution at swift.org> wrote:
>
> Hi all,
>
> Thank you for all your comments and feedback! I've rewritten and expanded the proposal to address as many peoples' concerns as possible.
>
> Best,
> Austin
>
>> On Jun 24, 2016, at 10:50 PM, Austin Zheng <austinzheng at gmail.com <mailto:austinzheng at gmail.com>> wrote:
>>
>> Hello all,
>>
>> Per Chris Lattner's list of open Swift 3 design topics (http://article.gmane.org/gmane.comp.lang.swift.evolution/21369 <http://article.gmane.org/gmane.comp.lang.swift.evolution/21369>), I've put together a proposal for removing type inference for associated types.
>>
>> It can be found here: https://github.com/austinzheng/swift-evolution/blob/az-assoctypeinf/proposals/XXXX-remove-assoctype-inference.md <https://github.com/austinzheng/swift-evolution/blob/az-assoctypeinf/proposals/XXXX-remove-assoctype-inference.md>
>>
>> Thoughts, criticism, and feedback welcome. There are at least two slightly different designs in the proposal, and I'm sure people will have ideas for even more.
>>
>> Best,
>> Austin
>
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