on Mon Mar 28 2016, Erica Sadun <[email protected]> wrote: >> On Mar 28, 2016, at 3:54 PM, Dave Abrahams via swift-evolution >> <[email protected]> wrote: >> >> >> on Mon Mar 28 2016, Erica Sadun <[email protected]> wrote: >> > >>>> On Mar 28, 2016, at 3:25 PM, Dave Abrahams via swift-evolution >>>> <[email protected]> wrote: >>>> >>>> >>>> on Mon Mar 28 2016, Xiaodi Wu >>> >>>> <[email protected] >>>> <mailto:[email protected]>> >>>> 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 -- Dave _______________________________________________ swift-evolution mailing list [email protected] https://lists.swift.org/mailman/listinfo/swift-evolution
