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

If your JSON has a structure

{"themes" : [{"title": "Foo", "answer": 1, "question": 2},
             {"title": "Bar", "answer": 3, "question": 4}]}

you need an equivalent for the themes object. Add this struct

struct Theme : Codable {
    var themes : [Question]
}

Now you can decode the JSON:

if let decoded = try? JSONDecoder().decode(Theme.self, from: data) {
    print("decoded:", decoded)
} else {
    print("Not working")
}

The containing Question objects are decoded implicitly.