on Mon Mar 28 2016, Dave Abrahams <swift-evolution@swift.org> wrote:
> on Mon Mar 28 2016, Erica Sadun <swift-evolution@swift.org> wrote: > >>> On Mar 28, 2016, at 3:54 PM, Dave Abrahams via swift-evolution >>> <swift-evolution@swift.org> wrote: >>> >>> >>> on Mon Mar 28 2016, Erica Sadun <swift-evolution@swift.org> wrote: >>> >> >>>>> On Mar 28, 2016, at 3:25 PM, Dave Abrahams via swift-evolution >>>>> <swift-evolution@swift.org> wrote: >>>>> >>>>> >>>>> on Mon Mar 28 2016, Xiaodi Wu >>>> >>>>> <swift-evolution@swift.org >>>>> <mailto:swift-evolution@swift.org>> >>>>> wrote: >>>>> >>>>>> Right, Countable could refine Strideable. I'm no expert on this, but >>>>>> some cursory reading suggests that the analogous feature in C++ simply >>>>>> requires the type to have operator++ defined. Obviously, that won't >>>>>> work for Swift 3.0... >>>>> >>>>> Hmm, instead of defining a new protocol (Countable), what if we just use >>>>> “Strideable where Stride : Integer” as a constraint? >>>> >>>> I like a differentiation between continuous and discrete things >>>> although both can have ranges, membership, fences, >>>> and a way to stride through them >>> >>> Strideable where Stride : Integer expresses just exactly that. Now if I >>> could only get the type-checker to cooperate... >> >> I am ridiculously excited about what you're doing there. >> Looking forward to beautiful floating point strides if for no >> other reason than I can point out how well they work for math >> in comparison to traditional for;;loops, so maybe people will >> stop burning semicolons on my lawn. > > The basics: > https://github.com/apple/swift/commit/a5c3c63c3d5d940f729c23aab342ea4d270d264a Hi Erica, After some consideration, while I want to see the smart (x..<y).striding(by: z) stuff happen too, it's somewhat incidental to the (already massive) project we're undertaking in this branch. Would you like to take on the implementation and/or proposal? I'd be happy to provide guidance. -- Dave _______________________________________________ swift-evolution mailing list swift-evolution@swift.org https://lists.swift.org/mailman/listinfo/swift-evolution
