[Pitch #2] Property Delegates by Custom Attributes

[anandabits (Matthew Johnson)]

@cbarrett

Has there been any thinking about how multiple property delegates could be composed? Would it require using a hypothetical @propertyDelegate struct Compose<P, Q> , or is this a feature of the syntax I missed?

I sketched out one approach to composition using a family of protocols to support higher-order property delegates. Now that the restriction on a single generic argument of Value has been removed I think something along these lines would work. I think this is an area that will need to see some exploration and experience before anything along these lines would be considered as a proposal though.