> On Mar 16, 2017, at 4:00 PM, Matthew Johnson via swift-evolution > <swift-evolution@swift.org> wrote: > > > > Sent from my iPad > >> On Mar 16, 2017, at 5:54 PM, Ben Rimmington <m...@benrimmington.com> wrote: >> >> >>>> On 16 Mar 2017, at 21:14, Matthew Johnson wrote: >>>> >>>> On Mar 16, 2017, at 4:12 PM, Itai Ferber <ifer...@apple.com> wrote: >>>> >>>> If throwing subscripts made it in the Swift 4 timeframe, then we would >>>> certainly consider it. >>> >>> Cool. Any comment from the core team on whether this is a possibility? If >>> it is and nobody else wants to write a proposal I would be willing to do it. >> >> "Throwing Properties and Subscripts" proposal by Brent Royal-Gordon (12 >> months ago): >> >> <https://github.com/apple/swift-evolution/pull/218> > > Oh, great! I had forgotten about this. It would be awesome if we could > revive this for Swift 4 especially so it can be considered as part of the > interface of this API. Even if Foundation doesn't adopt the, they would be a > great complement for those of us who would prefer the lighter syntax and are > willing to use our own wrapper.
I think the limiting factor here is not reviewing the proposal, but implementing it. If someone comes up with a prototype implementation it would increase the odds of the proposal being accepted. A big part of this would just be untangling a pile of code in SILGen for emitting function call arguments and applying them. Right now there’s too much duplication between method calls and property access and subscripts. I need to do some work in this area to implement default arguments for subscripts; I think this can be accomplished through some refactoring and deleting of code. I haven’t thought about throwing properties and subscripts but I imagine it would be similar. Slava > >> >> -- Ben >> > > _______________________________________________ > swift-evolution mailing list > swift-evolution@swift.org <mailto:swift-evolution@swift.org> > https://lists.swift.org/mailman/listinfo/swift-evolution > <https://lists.swift.org/mailman/listinfo/swift-evolution>
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