I'm having an issue with an NSDictionary that is passing through Swift code and back to Objective-C losing access to a method implemented by a category on NSDictionary. There is clearly some subtlety about bridged dictionaries that I'm missing, and I'd appreciate any clarification that the list can provide.
Specifically: I have a Swift 3 application that uses some legacy Objective-C classes. One of these classes relies on a category on NSDictionary that implements a method called `-boolValueForKey:`. In the main application, the Swift code calls a method on a remote object proxy that returns an NSDictionary, which get bridged back to a Swift dictionary (`[AnyHashable: Any]`). This bridged dictionary is passed to a method on the legacy Objective-C class that calls the `-boolValueForKey:` method from the category. At this point, a runtime exception occurs that says the dictionary object (which at this point is a `_SwiftDeferredNSDictionary`, according to the debugger) doesn’t recognize the selector `-boolValueForKey:`. I can work around the issue in my code by modifying the legacy Objective-C class and inlining the implementation of `-boolValueForKey:` — but is there a better general approach? Thanks — Russell
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