Computer scienceProgramming languagesKotlinTypes and data structuresVariables

Structural vs referential equality

Comparing Kotlin Data Class Objects

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Consider the following Kotlin code snippet:

data class User(val name: String, val age: Int)

fun main() {
    val user1 = User("John", 25)
    val user2 = User("John", 25)
    val user3 = user1

    println(user1 == user2)
    println(user1 === user2)
    println(user1 == user3)
    println(user1 === user3)
}

Which of the following statements regarding the output of the snippet are correct?

Select one or more options from the list

The output of 'user1 === user3' will be true.

The output of 'user1 === user2' will be false.

The output of 'user1 == user3' will be false.

The output of 'user1 == user2' will be true.

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