Either

sealed class Either<out L, out R>

Types

data class Left<out L>(val value: L) : Either<L, Nothing>

data class Right<out R>(val value: R) : Either<Nothing, R>

inline fun <L, R, T> Either<L, R>.flatMap(transform: (R) -> Either<L, T>): Either<L, T>

inline fun <T> fold(onLeft: (L) -> T, onRight: (R) -> T): T

fun <L, R> Either<L, R>.getOrElse(defaultValue: R): R

inline fun <L, R, T> Either<L, R>.map(transform: (R) -> T): Either<L, T>