Package e.java

Class Maybe<A>

java.lang.Object

e.java.Maybe<A>

public class Maybe<A>
extends java.lang.Object

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	Maybe(E e, A value)

Method Summary

Modifier and Type	Method	Description
static <A> Maybe<A>	catching(ThrowingSupplier<A> action, java.util.function.Function<java.lang.Throwable,E> ifFailure)
java.util.Optional<E>	eOptional()
boolean	equals(java.lang.Object o)
static <A> Maybe<A>	failure(E e)
<B> Maybe<B>	flatMap(java.util.function.Function<A,Maybe<B>> f)
<B> B	fold(java.util.function.Function<E,B> ifFailure, java.util.function.Function<A,B> ifSuccess)
A	getOrElse(A defaultValue)
int	hashCode()
boolean	isSuccess()
<B> Maybe<B>	map(java.util.function.Function<A,B> f)
Maybe<A>	orElse(Maybe<A> alternative)
static <A> Maybe<A>	success(A value)
java.lang.String	toString()
java.util.Optional<A>	valueOptional()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Maybe

protected Maybe(E e,
                A value)

Method Detail

failure

public static <A> Maybe<A> failure(E e)

success

public static <A> Maybe<A> success(A value)

catching

public static <A> Maybe<A> catching(ThrowingSupplier<A> action,
                                    java.util.function.Function<java.lang.Throwable,E> ifFailure)

isSuccess

public boolean isSuccess()

eOptional

public java.util.Optional<E> eOptional()

valueOptional

public java.util.Optional<A> valueOptional()

map

public <B> Maybe<B> map(java.util.function.Function<A,B> f)

flatMap

public <B> Maybe<B> flatMap(java.util.function.Function<A,Maybe<B>> f)

fold

public <B> B fold(java.util.function.Function<E,B> ifFailure,
                  java.util.function.Function<A,B> ifSuccess)

getOrElse

public A getOrElse(A defaultValue)

orElse

public Maybe<A> orElse(Maybe<A> alternative)

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object