Left

data class Left<L>(val l: L) : Either<L, Nothing> (source)

The left case of an Either.

Constructors

constructor(l: L)

val l: L

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

flat-map over the Right side of this Either.

inline fun <T> fold(fL: (L) -> T, fR: (Nothing) -> T): T

fold this.

inline fun <T> map(f: (Nothing) -> T): Either<L, T>

Maps over the Right side of this Either.

Turns this Either into an Option, the Right side becomes Some the left side is ignored and turned into None.