Package com.github.underscore

Class Optional<T>

java.lang.Object

com.github.underscore.Optional<T>

public final class Optional<T>
extends java.lang.Object

Method Summary

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

isEmpty

public boolean isEmpty()

isPresent

public boolean isPresent()

map

public <F> Optional<F> map(java.util.function.Function<? super T,F> mapper)

orThrow

public <X extends java.lang.Throwable> T orThrow(java.util.function.Supplier<? extends X> exceptionFunction)
                                          throws X extends java.lang.Throwable

Throws:

X extends java.lang.Throwable

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