> On Dec 8, 2015, at 11:44 AM, Austin Zheng via swift-dev <swift-dev@swift.org> > wrote: > > Hello devs, > > I have two questions about the _Reflectable and CustomReflectable protocols > in the stdlib. (These are both in context of Jira ticket SR-88.) > > First, I notice that _Reflectable encompasses both CustomReflectable and > CustomPlaygroundQuickLookable's functionality. It looks like there are a > couple of _MirrorTypes that exist only to provide quicklook functionality. > Can I assume that, quicklook behavior aside, a _MirrorType conformer that is > hardcoded to report zero children can be replaced by the default runtime > mirror (e.g. the type who the _FoobarMirrorType belongs to doesn't need to > conform to CustomReflectable)?
There's some accretion here. We didn't have time to phase out _MirrorType completely, so the new Swift 2 interfaces are still implemented for some times by falling back to _MirrorType's implementation. > Secondly, is there an explicit replacement for _MirrorType's "summary" > property? As-is, the current Mirror type provides no analogous property, and > in most cases the existing custom mirrors just return the object's > description. Was the "reflection summary" functionality broken out into a > third protocol, or dropped altogether? IIRC it was decided that the summary wasn't usefully different from debugDescription; I believe playgrounds just use the debugDescription now. -Joe _______________________________________________ swift-dev mailing list swift-dev@swift.org https://lists.swift.org/mailman/listinfo/swift-dev
