Remove nested key from dictionary

Question

Let\'s say I have a rather complex dictionary, like this one:

let dict: [String: Any] = [
    \"countries\": [
        \"japan\": [
            \"capital\":          


        

Answer 1

Pass your dictionary to this function, It will return you a flat dictionary, without any nested dict incorporated .

//SWIFT 3.0

func concatDict( dict: [String: Any])-> [String: Any]{
        var dict = dict
        for (parentKey, parentValue) in dict{
            if let insideDict = parentValue as? [String: Any]{
                let keys = insideDict.keys.map{
                    return parentKey + $0
                }
                for (key, value) in zip(keys, insideDict.values) {
                    dict[key] = value
                }
                dict[parentKey] = nil
                dict = concatDict(dict: dict)
            }
        }
        return dict
    }