How to clone object in Kotlin?

Question

The question is that simple.

Kotlin documentation describes cloning only in accessing Java and in enum class. In latter case clone is just throwing an exception.

Answer 1

A Kotlin data class is easy to clone using .copy()

All values with be shallow copied, be sure to handle any list/array contents carefully.

A useful feature of .copy() is the ability to change any of the values at copy time. With this class:

data class MyData(
    val count: Int,
    val peanuts: Int?,
    val name: String
)
val data = MyData(1, null, "Monkey")

You could set values for any of the properties

val copy = data.copy(peanuts = 100, name = "Elephant")

The result in copy would have values (1, 100, "Elephant")