Hi, It’s hard to be 100% certain because of bugs.swift.org being down currently, but I believe I have hit this bug:
https://bugs.swift.org/browse/SR-6039 "A `protocol A: class` is not any `AnyObject`” This is marked as a duplicate of a presumably very old issue judging by its low number: https://bugs.swift.org/browse/SR-55 "non-@objc protocol existentials do not conform to their own protocol type" So, I have a protocol: public protocol ActionAuditorObserver: AnyObject { func actionAuditorInserted(entries: [ActionAuditEntry]) } …where ActionAuditEntry is a struct. Trying to use a generic collection of my own for these, of the form: class ObserverSet<T: AnyObject> { … } Using: let observers = ObserverSet<ActionAuditorObserver>() …results in "'ActionAuditorObserver' is not convertible to ‘AnyObject’”. I think this is indeed SR-6039, which makes me really sad as it implies this is not going to be fixed imminently. I am trying to write this as a pure-swift framework as so far have succeeded. If I add @objc to the protocol as a workaround for this, I then can no longer have the observer pass in an array of structs. So then I have to change the struct to a class, and I’m pushed farther away from my goals :( Is there anything I am missing, or a better way to workaround this? I have to have the ObserverSet require AnyObject because it needs to do identity checking when removing them. Equatable does not make sense for observers. Losing the struct and forcing @objc feels like such a bitter pill for something so simple. Thanks in advance Marc _______________________________________________ swift-users mailing list swift-users@swift.org https://lists.swift.org/mailman/listinfo/swift-users
