[swift-evolution] Strings in Swift 4
Dave Abrahams
dabrahams at apple.com
Sat Jan 21 11:19:57 CST 2017
Sent from my iPad
> On Jan 20, 2017, at 6:11 PM, Joe Groff <jgroff at apple.com> wrote:
>
>
>>> On Jan 20, 2017, at 5:15 PM, Ben Cohen via swift-evolution <swift-evolution at swift.org> wrote:
>>>
>>>
>>> On Jan 20, 2017, at 3:29 PM, Jaden Geller via swift-evolution <swift-evolution at swift.org> wrote:
>>>
>>> Wouldn’t `x[…]` be more consistent with these other syntaxes?
>>>
>>
>> Maybe (though are those extra characters really telling you much?).
>>
>> But you can’t write that in Swift – you’d need a 0-argument operator.
>>
>> (Or a […] postfix operator I guess if you wanted to try and sneak that through, but that is also not allowed… :)
>
> Technically, you can, since operators are function values:
>
> struct Foo {}
> struct Woo { subscript(_: (Foo, Foo) -> Foo) -> Int { return 0 } }
> func ...(_ x: Foo, _ y: Foo) -> Foo { return x }
>
> Woo()[...]
Joe, you are an evil genius.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.swift.org/pipermail/swift-evolution/attachments/20170121/ab5fe8c5/attachment.html>
More information about the swift-evolution
mailing list