Package io.streamthoughts.azkarra.api.monad

Class Either<L,R>

java.lang.Object

io.streamthoughts.azkarra.api.monad.Either<L,R>

Type Parameters:

L - the Either.Left type.

R - the Either.Right type.

Direct Known Subclasses:

Either.Left, Either.Right

public abstract class Either<L,R>
extends Object

Simple Either monad type.

Nested Class Summary

Nested Classes

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

Method Summary

Modifier and Type	Method	Description
<T> T	fold(Function<L,T> fl, Function<R,T> fr)
abstract boolean	isLeft()	Returns true if this is a Either.Left, false otherwise.
abstract boolean	isRight()	Returns true if this is a Either.Right, false otherwise.
Either.LeftProjection<L,R>	left()
static <L,R> Either<L,R>	left(L value)
Either.RightProjection<L,R>	right()
static <L,R> Either<L,R>	right(R value)

Methods inherited from class java.lang.Object

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

Method Detail

left

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

right

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

isLeft

public abstract boolean isLeft()

Returns true if this is a Either.Left, false otherwise.

isRight

public abstract boolean isRight()

Returns true if this is a Either.Right, false otherwise.

left

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

right

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

fold

public <T> T fold(Function<L,T> fl,
                  Function<R,T> fr)