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> On Jun 2, 2017, at 7:33 AM, Xiaodi Wu via swift-evolution > <swift-evolution@swift.org> wrote: > > > On Fri, Jun 2, 2017 at 04:28 Brent Royal-Gordon via swift-evolution > <swift-evolution@swift.org> wrote: >>> On May 28, 2017, at 11:37 PM, Daryle Walker via swift-evolution >>> <swift-evolution@swift.org> wrote: >>> >>> Static-Sized Arrays >> >> My preference would still be to build this from four separate features: >> >> 1. Magic tuple conformances: We already want to be able to automatically >> conform tuples to protocols like Equatable, Hashable, and Comparable. These >> can all be compiler magic; they don't have to be definable in userspace. >> >> 2. Conform tuples to Collection: The Element type should be the most >> specific common supertype of the tuple's elements. If all the elements are >> the same type, it would be that type. The Index and IndexDistance types >> should be Int. >> >> 3. Conform same-type tuples to MutableCollection: If all elements are the >> same type, you can also modify the values. (If their types vary in any way, >> however, it would not be safe to allow mutations, since you could assign the >> wrong type to an element.) >> >> 3. Add sugar for a tuple of N identical elements: Probably something like `4 >> * Int`, but opinions can vary. >> >> This solution avoids adding another structural type to the language or >> introducing non-type generic parameters. It also addresses other needs: 1 >> and 2 are desirable features in their own right which address other use >> cases in addition to this one. And it's nicely incremental, which is always >> a plus. > > Exactly this. The whole conversation is wildly out of scope and the critical > technical details about implementation of the feature is either missing or > inaccurate, but I'll chime in for future reference to say that this > particular color of the shed is, in my view, the most congruent with Swift's > direction. +1 > >> >> -- >> Brent Royal-Gordon >> Architechies >> >> _______________________________________________ >> swift-evolution mailing list >> swift-evolution@swift.org >> https://lists.swift.org/mailman/listinfo/swift-evolution > _______________________________________________ > swift-evolution mailing list > swift-evolution@swift.org > https://lists.swift.org/mailman/listinfo/swift-evolution
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