arrow-core/arrow.core/Either/Right

Right

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

The right side of the disjoint union, as opposed to the Left side.

Constructors

fun <out B> Right(value: B)

Types

object Companion

Functions

inline fun all(predicate: (B) -> Boolean): Boolean

Returns true if Left or returns the result of the application of the given predicate to the Right value.

inline fun <C> bifoldLeft(c: C, f: (C, Nothing) -> C, g: (C, B) -> C): C

inline fun <C> bifoldMap(MN: Monoid<C>, f: (Nothing) -> C, g: (B) -> C): C

inline fun <C, D> bimap(leftOperation: (Nothing) -> C, rightOperation: (B) -> D): Either<C, D>

Map over Left and Right of this Either

inline fun <AA, C> bitraverse(fe: (Nothing) -> Iterable<AA>, fa: (B) -> Iterable<C>): List<Either<AA, C>>

bitraverseNullable

inline fun <AA, C> bitraverseNullable(fl: (Nothing) -> AA?, fr: (B) -> C?): Either<AA, C>?

bitraverseOption

inline fun <AA, C> bitraverseOption(fl: (Nothing) -> Option<AA>, fr: (B) -> Option<C>): Option<Either<AA, C>>

bitraverseValidated

inline fun <AA, C, D> bitraverseValidated(fe: (Nothing) -> Validated<AA, C>, fa: (B) -> Validated<AA, D>): Validated<AA, Either<C, D>>

inline fun exists(predicate: (B) -> Boolean): Boolean

Returns false if Left or returns the result of the application of the given predicate to the Right value.

inline fun findOrNull(predicate: (B) -> Boolean): B?

inline fun <C> fold(ifLeft: (Nothing) -> C, ifRight: (B) -> C): C

Applies ifLeft if this is a Left or ifRight if this is a Right.

inline fun <C> foldLeft(initial: C, rightOperation: (C, B) -> C): C

fun <C> foldMap(MN: Monoid<C>, f: (B) -> C): C

fun isEmpty(): Boolean

Returns true if Left

fun isLeft(): Boolean

fun isNotEmpty(): Boolean

Returns true if Right

fun isRight(): Boolean

inline fun <C> map(f: (B) -> C): Either<Nothing, C>

The given function is applied if this is a Right.

inline fun <C> mapLeft(f: (Nothing) -> C): Either<C, B>

The given function is applied if this is a Left.

fun orNone(): Option<B>

fun orNull(): B?

Returns the right value if it exists, otherwise null

fun replicate(n: Int): Either<Nothing, List<B>>

fun swap(): Either<B, Nothing>

If this is a Left, then return the left value in Right or vice versa.

inline fun tap(f: (B) -> Unit): Either<Nothing, B>

The given function is applied as a fire and forget effect if this is a Right. When applied the result is ignored and the original Either value is returned

inline fun tapLeft(f: (Nothing) -> Unit): Either<Nothing, B>

The given function is applied as a fire and forget effect if this is a Left. When applied the result is ignored and the original Either value is returned

open override fun toString(): String

fun toValidated(): Validated<Nothing, B>

fun toValidatedNel(): ValidatedNel<Nothing, B>

inline fun <C> traverse(fa: (B) -> Iterable<C>): List<Either<Nothing, C>>

traverseNullable

inline fun <C> traverseNullable(fa: (B) -> C?): Either<Nothing, C>?

inline fun <C> traverseOption(fa: (B) -> Option<C>): Option<Either<Nothing, C>>

traverseValidated

inline fun <AA, C> traverseValidated(fa: (B) -> Validated<AA, C>): Validated<AA, Either<Nothing, C>>

fun void(): Either<Nothing, Unit>

Properties

val value: B