> On Mar 25, 2016, at 4:09 PM, Brent Royal-Gordon via swift-evolution > <[email protected]> wrote: > >> Question: by what unit should >> >> for d in d0...d2 {} >> >> be iterating? Or should it be disallowed without a .striding(by: )? >> >> If the latter, NSDate might fall into the same bucket as floating types. > > Floating-point seconds (as NSTimeIntervals) are the natural > Strideable.Stride, but it's not particularly clear to me that you want 1 > second to be a default stride. It's the default you would guess, but it's not > actually a particularly useful default.
Any fixed-time-period stride with dates is fraught with peril. Not every day is 24 hours, not every minute is 60 seconds, etc. Working with dates requires enough special domain knowledge that I think it'd be harmful to try to genericize numeric concepts over it. -Joe _______________________________________________ swift-evolution mailing list [email protected] https://lists.swift.org/mailman/listinfo/swift-evolution
