Kotlin Standard Library Cookbook

How to do it...

1. Implement the Client class containing a data property of a Map<String, Any> type:

data class Client(private val data: Map<String, Any>)

2. Implement the CreditCard class:

data class CreditCard(val holderName: String,                      val number: String,                      val cvcCode: String,                      val expiration: Long)

3. Add the name, email, and creditCards properties to the Client class and delegate them to the data property:

data class Client(private val data: Map<String, Any>) {    val name: String by data    val email: String by data    val creditCards: List<CreditCard> by data}

4. Implement the toJson(): String member function, allowing us to serialize a Client type object into JSON format, and the fromJson(json: String): Client utility function responsible for the opposite ...