> On Apr 14, 2016, at 2:06 PM, Michael Peternell via swift-evolution > <[email protected]> wrote: > > https://github.com/apple/swift-evolution/blob/master/proposals/0057-importing-objc-generics.md > > How can Swift know if an Objective-C class implements +/- > classForGenericArgumentAtIndex: at compile time? Does it look at the object > code? Or does it look at the header file? Or maybe there is a third option? > > I'm asking, because this may lead to misunderstandings if the method needs to > be there in the header file, but Objective-C programmers are not aware that > they have to declare that method.
It needs to be present in the header at compile time. -Joe _______________________________________________ swift-evolution mailing list [email protected] https://lists.swift.org/mailman/listinfo/swift-evolution
