Swift Decodable Optional Key

Question

(This is a follow-up from this question: Using Decodable protocol with multiples keys.)

I have the following Swift code:

let additionalInfo          


        

Answer 1

I had this issue and I found this solution, just in case is helpful to somebody else:

let ageContainer = try? values.nestedContainer(keyedBy: AgeKeys.self, forKey: .age)
self.age = try ageContainer?.decodeIfPresent(Int.self, forKey: .realAge)

If you have an optional container, using try? values.nestedContainer(keyedBy:forKey) you don't need to check if the container exist using contains(.