Package com.atlassian.upm.api.util

Class Either<L,R>

java.lang.Object

com.atlassian.upm.api.util.Either<L,R>

Type Parameters:

L - the type of value stored left

R - the type of value stored right

public abstract class Either<L,R>
extends Object

A disjoint union type typically used as an alternative to Option where by convention the left value contains an error and the right is akin to "some".

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	Either.LeftProjection<L,R>
static final class	Either.RightProjection<L,R>

Method Summary

Modifier and Type	Method	Description
abstract <Z> Z	fold(Function<L,Z> l, Function<R,Z> r)
static <L, R> Iterable<L>	getLefts(Iterable<Either<L,R>> all)
static <L, R> Iterable<R>	getRights(Iterable<Either<L,R>> all)
final boolean	isLeft()
final boolean	isRight()
final Either.LeftProjection<L,R>	left()
static <L, R> Either<L,R>	left(L left)
final Either.RightProjection<L,R>	right()
static <L, R> Either<L,R>	right(R right)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

left

public static <L,
R> Either<L,R> left(L left)

right

public static <L,
R> Either<L,R> right(R right)

fold

public abstract <Z> Z fold(Function<L,Z> l,
 Function<R,Z> r)

left

public final Either.LeftProjection<L,R> left()

right

public final Either.RightProjection<L,R> right()

isLeft

public final boolean isLeft()

isRight

public final boolean isRight()

getLefts

public static <L,
R> Iterable<L> getLefts(Iterable<Either<L,R>> all)

getRights

public static <L,
R> Iterable<R> getRights(Iterable<Either<L,R>> all)