> On Apr 6, 2016, at 11:26 AM, Erica Sadun <[email protected]> wrote:
>
>>
>> On Apr 6, 2016, at 12:23 PM, Stephen Canon via swift-evolution
>> <[email protected] <mailto:[email protected]>> wrote:
>>
>>
>>> On Apr 6, 2016, at 11:20 AM, Stephen Canon via swift-evolution
>>> <[email protected] <mailto:[email protected]>> wrote:
>>>
>>>> On Apr 6, 2016, at 11:16 AM, Dave Abrahams via swift-evolution
>>>> <[email protected] <mailto:[email protected]>> wrote:
>>>>
>>>> One question that I *do* think we should answer, is whether the elements
>>>> of
>>>>
>>>> (0..<199).striding(by: -2)
>>>>
>>>> are even or odd.
>>>
>>> Odd. I don’t believe that many real use cases care, but odd is more
>>> efficient from a performance perspective. Needs to be documented clearly,
>>> however.
>>
>> Sorry, I was thinking of (0…199).striding(by: -2).
>>
>> For the (0..<199) case, Erica’s assessment seems about right, though it
>> isn’t at all obvious how it generalizes to floating point strides.
>
> (l..<h).striding(by: -dX) is undefined for floating point strides as there
> cannot be a starting value.
I’m OK with this.
_______________________________________________
swift-evolution mailing list
[email protected]
https://lists.swift.org/mailman/listinfo/swift-evolution
