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

[Nevin Brackett-Rozinsky]

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.

Nevin


 Of course, the subscript notation has much more serious problems, there is
> no way to allow one-sided subscripting, but disallow two-sided subscripting
> for the memory API, while still allowing two-sided subscripting for
> ordinary slicing operations. This is why I still think at:from: is the
> much better syntax.
>
> On Wed, Oct 11, 2017 at 3:01 PM, Nevin Brackett-Rozinsky <
> nevin.brackettrozinsky at gmail.com
> <javascript:_e(%7B%7D,'cvml','nevin.brackettrozinsky at gmail.com');>> wrote:
>
>> I believe Kelvin was asking about the usage of ellipsis *by itself*, as
>> in Xiaodi’s example, “newBuffer[...]”.
>>
>> Nevin
>>
>
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