Encodable enum with associated values - keyed container

QuestionnaireFeedback.swift

enum QuestionnaireFeedback {
    case numeric(Int)
    case text(String)
}

extension QuestionnaireFeedback: Encodable {
    enum CodableKeys: String, CodingKey {
        case numeric
        case text
    }
    
  //The only real trick to encoding enums with associated values is implementing the encode func yourself.
  //  Make + use the CodableKeys helper enum to help map your QuestionnaireFeedback instance to the correct case/associated value
    func encode(to encoder: Encoder) throws {
        var container = encoder.container(keyedBy: CodableKeys.self)
        
        switch self {
        case let .numeric(value):
            try container.encode(value, forKey: .numeric)
        case let .text(text):
            try container.encode(text, forKey: .text)
        }
    }
}