on Tue Mar 29 2016, Jason Sadler <[email protected]> wrote: > Hi folks, > > I have an issue with using a heterogeneous array of objects conforming > to a protocol - I want to write an extension on Array (or > CollectionType) that applies only when Element : MyProtocol, but I > can’t call methods in that extension from an instance of [MyProtocol] > because "Using ‘MyProtocol' as a concrete type conforming to protocol > ‘MyProtocol' is not supported”
Hint: write your extension so it applies when Element == MyProtocol instead. > (For more background, my full use case can be seen in this gist: > https://gist.github.com/sadlerjw/2cc16b4375b02fe7f400) > > I’ve asked about this on swift-users > (https://lists.swift.org/pipermail/swift-users/Week-of-Mon-20160321/001560.html) > and got some good workarounds but no one was able to provide me with > information on any future plans in swift to address this issue - > whether that’s making protocols conform to themselves, or some other > improved approach to heterogeneous collections. I wonder if anyone > here can shed some light on this? (I’m new to the mailing lists, > sorry!) -- Dave _______________________________________________ swift-evolution mailing list [email protected] https://lists.swift.org/mailman/listinfo/swift-evolution
