I have three structs that are codable and identifiable: SetEntry, TimeEntry, and DistanceEntry. I have another struct called WorkoutLog which takes in an Exercise and has a property entry. What I am trying to do is allow entry to be any of the above entry types. I thought about using a protocol, but I couldn't get it decodable and I don't know how to fix that. I know that with protocols you have to use the any Protocol syntax and I think that is what is limiting me from making it codable, but I can't really be sure. I also know that we could use enums with associated types but I don't know if this is good for production-level code. Any insights would be greatly appreciated. struct SetEntry: Identifiable, Codable { var id: UUID var reps: Int var weight: Double init(id: UUID = UUID(), reps: Int, weight: Double) { self.id = id self.reps = reps self.weight = weight } } struct DistanceEntry: Codable, Identifiable { var id: UUID var distanceInMeters: Int init(id: UUID = UUID(), distanceInMeters: Int) { self.id = id self.distanceInMeters = distanceInMeters } } struct TimeEntry: Identifiable, Codable { var id: UUID var timeInSeconds: Int init(id: UUID = UUID(), timeInSeconds: Int) { self.id = id self.timeInSeconds = timeInSeconds } } struct WorkoutLog: Identifiable, Codable { var id: UUID var exercise: Exercise var entry: ??? }