Reference

data class Reference<out T : Any>(val current: T, val next: () -> T?)

A reference gives a data and a function to later check the validity and retrieve that data.

Parameters

current

The value of the reference at the time of reference creation.

A function that returns the value of the reference, or null if the reference has become invalid, when later needed.

fun <out T : Any> Reference(current: T, next: () -> T?)

val next: () -> T?