net.emaze.dysfunctional.options

Class Maybe<E>

java.lang.Object

net.emaze.dysfunctional.options.Maybe<E>

Type Parameters:

E - the value type

public class Maybe<E>
extends Object

Holds an optional value.

Author:

rferranti

Constructor Summary

Constructors

Constructor and Description
Maybe(E element, boolean hasValue)

Method Summary

Methods

Modifier and Type	Method and Description
<T> Either<T,E>	either(Provider<T> nothing)
boolean	equals(Object rhs)
<T> Maybe<T>	fmap(Delegate<T,E> delegate)
int	hashCode()
boolean	hasValue()
static <E> Maybe<E>	just(E element)
static <E> Maybe<E>	nothing()
E	orElse(E otherwise)
String	toString()
E	value()

Methods inherited from class java.lang.Object

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

Constructor Detail

Maybe

public Maybe(E element,
     boolean hasValue)

Method Detail

hasValue

public boolean hasValue()

value

public E value()

fmap

public <T> Maybe<T> fmap(Delegate<T,E> delegate)

either

public <T> Either<T,E> either(Provider<T> nothing)

orElse

public E orElse(E otherwise)

nothing

public static <E> Maybe<E> nothing()

just

public static <E> Maybe<E> just(E element)

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object rhs)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object