[swift-evolution] Generic Subscripts

[Dave Abrahams]

on Sun Jan 15 2017, Jacob Bandes-Storch <jtbandes-AT-gmail.com> wrote:

> On Sat, Jan 14, 2017 at 3:41 PM, Dave Abrahams via swift-evolution <
> swift-evolution at swift.org> wrote:
>
>>
>> on Fri Jan 13 2017, John McCall <swift-evolution at swift.org> wrote:
>>
>> > I'm also not sure we'd ever want the element type to be inferred from
>> > context like this.  Generic subscripts as I see it are about being
>> > generic over *indexes*, not somehow about presenting a polymorphic
>> > value.
>>
>> Actually I *would* want to be able to do that, though I admit it's the
>> 1% case (or less).
>>
>
> 1%? Wouldn't many JSON libraries, for instance, be eager to take advantage
> of this?

Y'all brought up plenty of examples I hadn't thought of, so 1% might be
too low.

-- 
-Dave