Swift 4 Codable decoding json

Question

I\'m trying to implement the new Codable protocol, so I added Codable to my struct, but am stuck on decoding the JSON.

Here\'s

Answer 1

You're getting this error because your JSON is likely structured as so:

{
  "themes": [
    { "title": ..., "question": ..., "answer": ... },
    { "title": ..., "question": ..., "answer": ... },
    { ... }
  ],
  ...
}

However, the code you wrote expects a [Question] at the top level. What you need is a different top-level type that has a themes property which is a [Question]. When you decode that top-level type, your [Question] will be decoded for the themes key.