[swift-evolution] [Pitch] Introduce user-defined dynamically "callable" types

[Joe Groff]

> On Nov 11, 2017, at 4:21 AM, Marcel Weiher <marcel.weiher at gmail.com> wrote:
> 
> 
> 
>> On Nov 10, 2017, at 19:04 , Joe Groff via swift-evolution <swift-evolution at swift.org> wrote:
>> 
>> I don't like the idea of some calls having wildly different semantics from others;
> 
> The obvious solution then is to make this proposal the general case and current calls a specialization of that.

That'd be great, but Swift violates Gilad Bracha's golden rule by having static overloading, and throws bidirectional type inference on top, so our static name resolution can't be treated as a specialization of a dynamic name lookup mechanism in all cases.

-Joe