> On Nov 4, 2017, at 1:32 AM, Goffredo Marocchi <pana...@gmail.com> wrote: > > > > Sent from my iPhone > >> On 4 Nov 2017, at 05:26, Slava Pestov via swift-evolution >> <swift-evolution@swift.org> wrote: >> >> Protocols define requirements, they don’t “add” things to the conforming type > > I agree with this, but then this warrants a change for protocol extensions > too. Would you be happy with the restriction that default method > implementations are only available for value types and not for classes (as > structs cannot share code any other way, it is the argument for that I seem > to recall)?
Protocol extensions are in some sense just syntax sugar for defining new functions. Having a protocol conformance add storage to the conforming type is fundamentally different. Slava > > _______________________________________________ swift-evolution mailing list swift-evolution@swift.org https://lists.swift.org/mailman/listinfo/swift-evolution
