[swift-evolution] Feature proposal: Range operator with step

[Dave Abrahams]

on Tue Apr 05 2016, Erica Sadun <swift-evolution at swift.org> wrote:

>> On Apr 5, 2016, at 4:17 PM, Dave Abrahams via swift-evolution <swift-evolution at swift.org> wrote:
>> 
>> 
>> on Tue Apr 05 2016, Erica Sadun <swift-evolution at swift.org> wrote:
>> 
>
>>>    On Apr 5, 2016, at 1:54 PM, Dave Abrahams
>>>    <dabrahams at apple.com> wrote:
>>>    IMO this:
>>> 
>>>    (-9...0).reverse()
>>> 
>>>    is better than 
>>> 
>>>    stride(from: 0, to: -10, by: -1)
>>> 
>>>    What do you think?
>>> 
>>> The latter better reflects an author's actual intent. The former depends on
>>> implementation details, which can be hazy, especially, around the edge cases. It
>>> is quicker to read, understand, and verify that the latter is what is
>>> meant.
>> 
>> Except that there seems to be some confusion over what "to:" means, right?
>
> obviously (0..<-10).by(-2) would be best.

I don't think that's obvious at all, because 0 ≮ 10

-- 
Dave