I'd be interested in taking it but I have another ticket already, so if someone else wants it they should take it.
Austin On Mon, Dec 7, 2015 at 2:35 PM, Dmitri Gribenko <griboz...@gmail.com> wrote: > On Mon, Dec 7, 2015 at 2:27 PM, Jacob Bandes-Storch <jtban...@gmail.com> > wrote: > > What do you mean by "without copying the underlying collection"? > > The original collection should be preserved through this upgrade, and > not, say, copied into a fresh Array. > > > Is this > > specifically for the case where the AnySequence is wrapping a collection > > (which is not always the case)? > > Exactly. > > Dmitri > > > On Mon, Dec 7, 2015 at 2:18 PM, Dmitri Gribenko via swift-dev > > <swift-dev@swift.org> wrote: > >> > >> It would require a proposal and a review, but the implementation is > >> more challenging here than the API design. The proposal would be > >> trivial, just one extra API, if I'm imagining this correctly. > >> > >> Dmitri > >> > >> On Mon, Dec 7, 2015 at 2:10 PM, Austin Zheng <austinzh...@gmail.com> > >> wrote: > >> > Would this require a review/proposal, since it involves an API change? > >> > > >> > On Mon, Dec 7, 2015 at 2:08 PM, Dmitri Gribenko via swift-dev > >> > <swift-dev@swift.org> wrote: > >> >> > >> >> Hi, > >> >> > >> >> If someone looks for a starter project in the standard library with > >> >> intermediate complexity (prior experience with Swift generics > >> >> required), here's one. > >> >> > >> >> This is in the area of existential sequence and collection wrappers. > >> >> > >> >> Upgrading AnyForwardCollection to AnyRandomAccessCollection works: > >> >> > >> >> (swift) AnyRandomAccessCollection(AnyForwardCollection([1,2,3])) > >> >> // r2 : AnyRandomAccessCollection<Int>? = > >> >> Optional(Swift.AnyRandomAccessCollection<Swift.Int>(_box: > >> >> Swift._CollectionBox<Swift.Array<Swift.Int>>)) > >> >> > >> >> Seems like we don't provide APIs to upgrade AnySequence to > >> >> Any*Collection: > >> >> > >> >> (swift) AnyRandomAccessCollection(AnySequence([1,2,3])) > >> >> <REPL Input>:1:1: error: cannot invoke initializer for type > >> >> 'AnyRandomAccessCollection<_>' with an argument list of type > >> >> '(AnySequence<Int>)' > >> >> > >> >> Of course, this should work without copying the underlying > collection. > >> >> > >> >> https://bugs.swift.org/browse/SR-119 > >> >> > >> >> Dmitri > >> >> > >> >> -- > >> >> main(i,j){for(i=2;;i++){for(j=2;j<i;j++){if(!(i%j)){j=0;break;}}if > >> >> (j){printf("%d\n",i);}}} /*Dmitri Gribenko <griboz...@gmail.com>*/ > >> >> _______________________________________________ > >> >> swift-dev mailing list > >> >> swift-dev@swift.org > >> >> https://lists.swift.org/mailman/listinfo/swift-dev > >> > > >> > > >> > >> > >> > >> -- > >> main(i,j){for(i=2;;i++){for(j=2;j<i;j++){if(!(i%j)){j=0;break;}}if > >> (j){printf("%d\n",i);}}} /*Dmitri Gribenko <griboz...@gmail.com>*/ > >> _______________________________________________ > >> swift-dev mailing list > >> swift-dev@swift.org > >> https://lists.swift.org/mailman/listinfo/swift-dev > > > > > > > > -- > main(i,j){for(i=2;;i++){for(j=2;j<i;j++){if(!(i%j)){j=0;break;}}if > (j){printf("%d\n",i);}}} /*Dmitri Gribenko <griboz...@gmail.com>*/ >
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