Package com.github.underscore

Class Optional<T>

java.lang.Object

com.github.underscore.Optional<T>

public final class Optional<T>
extends Object

Method Summary

Modifier and Type	Method	Description
static <T> Optional<T>	absent()
boolean	equals(Object o)
static <T> Optional<T>	fromNullable(T nullableReference)
T	get()
int	hashCode()
boolean	isPresent()
<U> Optional<U>	map(Function<? super T,? extends U> mapper)
static <T> Optional<T>	of(T arg)
T	or(T defaultValue)
T	orNull()
<X extends Throwable> T	orThrow(Supplier<? extends X> exceptionFunction)
String	toString()

Methods inherited from class java.lang.Object

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

Method Detail

of

public static <T> Optional<T> of(T arg)

fromNullable

public static <T> Optional<T> fromNullable(T nullableReference)

absent

public static <T> Optional<T> absent()

get

public T get()

or

public T or(T defaultValue)

orNull

public T orNull()

isPresent

public boolean isPresent()

map

public <U> Optional<U> map(Function<? super T,? extends U> mapper)

orThrow

public <X extends Throwable> T orThrow(Supplier<? extends X> exceptionFunction)
                                throws X extends Throwable

Throws:

X extends Throwable

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object