[swift-evolution] SE-1084 (B): buffer pointer partial initialization API

[Kelvin Ma]

Did not know you could do that. Still doesn’t change the fundamental
problems with that syntax though. I think that we could enforce a
precondition that overrunning the left hand slice is not allowed, but idk
if subscript notation is worth all that trouble.

On Thu, Oct 12, 2017 at 3:36 AM, Ole Begemann <ole at oleb.net> wrote:

>
> On 12. Oct 2017, at 01:17, Kelvin Ma via swift-evolution <
> swift-evolution at swift.org> wrote:
>
> On Wed, Oct 11, 2017 at 6:06 PM, Nevin Brackett-Rozinsky <nevin.
> brackettrozinsky at gmail.com> wrote:
>
>> On Wednesday, October 11, 2017, Kelvin Ma via swift-evolution <
>> swift-evolution at swift.org> wrote:
>>
>>> Yes, a 0-ary operator like that would have to be hard baked into the
>>> language itself.
>>>
>>
>> Actually, you can just make a subscript which takes a function as an
>> argument, and call it by passing in the ellipsis operator.
>>
>
> I mean,,, you can,,, but that’s kind of weird
>
>
> That's exactly how the [...] notation is implemented in the stdlib. Toni
> Suter wrote a great article about it: https://tonisuter.com/
> blog/2017/08/unbounded-ranges-swift-4/
>
>
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