sealed class Either<out L, out R> (source)
Represents a disjoint union i.e. a type with two possibilities, either Left or Right.
Provides a Right biased map and flatMap function as well as a few others.
fun <T> fold(fL: (L) -> T, fR: (R) -> T): T |
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fun <T> map(f: (R) -> T): Either<L, T> |
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fun toOption(): Option<R> |
fun <L, R, T> Either<L, R>.flatMap(f: (R) -> Either<L, T>): Either<L, T> |
data class Left<L> : Either<L, Nothing>
The left case of an Either. |
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data class Right<R> : Either<Nothing, R>
The right case of an Either. |