UPGRADE YOUR SKILLS: Learn advanced Swift and SwiftUI on Hacking with Swift+! >>

JSONDecoder and absent optionals

Forums > Swift

Context: Using SwiftData with an explicitly Codable class containing an optional.

Task: Decoding json data which intentionally lacks the optional's key

Result is JSONDecode fails, complaining about the absent key and something nil

I thought the decoder would by default ignore missing keys.

How should I be thinking about this problem?

(Latest MacOS 14 and non-beta Xcode)


Hacking with Swift is sponsored by Essential Developer

SPONSORED Join a FREE crash course for mid/senior iOS devs who want to achieve an expert level of technical and practical skills – it’s the fast track to being a complete senior developer! Hurry up because it'll be available only until April 28th.

Click to save your free spot now

Sponsor Hacking with Swift and reach the world's largest Swift community!

Reply to this topic…

You need to create an account or log in to reply.

All interactions here are governed by our code of conduct.

Unknown user

You are not logged in

Log in or create account

Link copied to your pasteboard.