Created
July 21, 2019 13:47
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sealed class Tree<out T> | |
object Empty : Tree<Nothing>() { | |
override fun toString() = "Empty" | |
} | |
data class Node<T>( | |
val value: T, | |
val left: Tree<T> = Empty, | |
val right: Tree<T> = Empty | |
) : Tree<T>() |
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