Regarding the "some-day" list (or "deferred" proposals): It has been discussed many times before, and Chris also agreed that it would be useful[1], but nobody seems to have made it happen. So I have created a trello board: https://trello.com/b/dkVHvhGn/swift-deferred-proposals
Hopefully we can maintain it collectively, and it should be a handy quick reference to previous discussions about specific subjects. I've added a few lists/cards to get started, including a link to this discussion about pattern matching. There's a README on the board that contains a link to gain add/edit access to the board. [1] https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20160926/027353.html On Fri, 23 Dec 2016 at 04:38 David Sweeris via swift-evolution < [email protected]> wrote: > On Dec 17, 2016, at 9:43 PM, Mathew Sanders via swift-evolution < > [email protected]> wrote: > > I've just joined the list (hi!) so not sure if this has been discussed in > the past. > > Curious to hear if a future version of Swift might ever include some sort > of pattern-matching extended to Arrays. Maybe something like the following: > > let numbers: [Int] > > > switch numbers { > case []: > // to match an empty array > > > case [1, 2, 3]: > // to match array with specific values > > > case [_, _, _]: > // to match array with 3 Ints > > > case let [first, last]: > // match a 2 element array and bind first and last elements > > > case let [first, next...]: > // to match array with at least one element > // bind first element, and bind other elements (could be empty) > // first: Int, next: [Int] > } > > I love the pattern matching on tuples, and would love to see if extend to > Arrays as well, but not sure if it fits with future goals for the language. > > > +1 > > Also, +1 for Erica’s idea of a “some day” list > > - Dave Sweeris > _______________________________________________ > swift-evolution mailing list > [email protected] > https://lists.swift.org/mailman/listinfo/swift-evolution >
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