Package com.landawn.abacus.util

Class u.OptionalDouble

java.lang.Object

com.landawn.abacus.util.u.OptionalDouble

All Implemented Interfaces:

Immutable, Comparable<u.OptionalDouble>

Enclosing class:

u

@Immutable
public static final class u.OptionalDouble
extends Object
implements Comparable<u.OptionalDouble>, Immutable

The Class OptionalDouble.

Method Summary

Modifier and Type	Method	Description
OptionalDouble	__()
u.Optional<Double>	boxed()
int	compareTo(u.OptionalDouble optional)
static u.OptionalDouble	empty()
boolean	equals(Object obj)
<E extends Exception> u.OptionalDouble	filter(Throwables.DoublePredicate<E> predicate)
<E extends Exception> u.OptionalDouble	flatMap(Throwables.DoubleFunction<u.OptionalDouble,E> mapper)
static u.OptionalDouble	from(OptionalDouble op)
double	get()
int	hashCode()
<E extends Exception> u.OptionalDouble	ifPresent(Throwables.DoubleConsumer<E> action)
<E extends Exception, E2 extends Exception> u.OptionalDouble	ifPresentOrElse(Throwables.DoubleConsumer<E> action, Throwables.Runnable<E2> emptyAction)	If present or else.
boolean	isEmpty()
boolean	isPresent()
<E extends Exception> u.OptionalDouble	map(Throwables.DoubleUnaryOperator<E> mapper)
<E extends Exception> u.OptionalInt	mapToInt(Throwables.ToIntFunction<Double,E> mapper)	Map to int.
<E extends Exception> u.OptionalLong	mapToLong(Throwables.ToLongFunction<Double,E> mapper)	Map to long.
<T, E extends Exception> u.Optional<T>	mapToNonNull(Throwables.DoubleFunction<T,E> mapper)
<T, E extends Exception> u.Nullable<T>	mapToObj(Throwables.DoubleFunction<T,E> mapper)	Map to obj.
static u.OptionalDouble	of(double value)
static u.OptionalDouble	ofNullable(Double val)
<E extends Exception> u.OptionalDouble	or(Throwables.Supplier<u.OptionalDouble,E> supplier)
double	orElse(double other)
<E extends Exception> double	orElseGet(Throwables.DoubleSupplier<E> other)	Or else get.
double	orElseThrow()	Or else throw.
<X extends Throwable> double	orElseThrow(Supplier<? extends X> exceptionSupplier)	Or else throw.
double	orElseZero()
double	orZero()	Deprecated. use orElseZero()
DoubleStream	stream()
ImmutableList<Double>	toImmutableList()	To immutable list.
ImmutableSet<Double>	toImmutableSet()	To immutable set.
List<Double>	toList()
Set<Double>	toSet()
String	toString()

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Method Details

empty

public static u.OptionalDouble empty()

Returns:

of

public static u.OptionalDouble of(double value)

Parameters:

value -

Returns:

ofNullable

public static u.OptionalDouble ofNullable(Double val)

Parameters:

val -

Returns:

from

public static u.OptionalDouble from(OptionalDouble op)

Parameters:

op -

Returns:

get

public double get()
           throws NoSuchElementException

Returns:

Throws:

NoSuchElementException - the no such element exception

isPresent

public boolean isPresent()

isEmpty

public boolean isEmpty()

ifPresent

public <E extends Exception> u.OptionalDouble ifPresent(Throwables.DoubleConsumer<E> action)
                                                 throws E

Type Parameters:

E -

Parameters:

action -

Returns:

Throws:

E - the e

ifPresentOrElse

public <E extends Exception,
E2 extends Exception>
u.OptionalDouble ifPresentOrElse(Throwables.DoubleConsumer<E> action,
 Throwables.Runnable<E2> emptyAction)
                          throws E,
E2

If present or else.

Type Parameters:

E -

E2 -

Parameters:

action -

emptyAction -

Returns:

Throws:

E - the e

E2 - the e2

filter

public <E extends Exception> u.OptionalDouble filter(Throwables.DoublePredicate<E> predicate)
                                              throws E

Type Parameters:

E -

Parameters:

predicate -

Returns:

Throws:

E - the e

map

public <E extends Exception> u.OptionalDouble map(Throwables.DoubleUnaryOperator<E> mapper)
                                           throws E

Type Parameters:

E -

Parameters:

mapper -

Returns:

Throws:

E - the e

mapToInt

public <E extends Exception> u.OptionalInt mapToInt(Throwables.ToIntFunction<Double,E> mapper)
                                             throws E

Map to int.

Type Parameters:

E -

Parameters:

mapper -

Returns:

Throws:

E - the e

mapToLong

public <E extends Exception> u.OptionalLong mapToLong(Throwables.ToLongFunction<Double,E> mapper)
                                               throws E

Map to long.

Type Parameters:

E -

Parameters:

mapper -

Returns:

Throws:

E - the e

mapToObj

public <T,
E extends Exception> u.Nullable<T> mapToObj(Throwables.DoubleFunction<T,E> mapper)
                                               throws E

Map to obj.

Type Parameters:

T -

E -

Parameters:

mapper -

Returns:

Throws:

E - the e

mapToNonNull

public <T,
E extends Exception> u.Optional<T> mapToNonNull(Throwables.DoubleFunction<T,E> mapper)
                                                   throws E

Throws:

E extends Exception

flatMap

public <E extends Exception> u.OptionalDouble flatMap(Throwables.DoubleFunction<u.OptionalDouble,E> mapper)
                                               throws E

Type Parameters:

E -

Parameters:

mapper -

Returns:

Throws:

E - the e

or

public <E extends Exception> u.OptionalDouble or(Throwables.Supplier<u.OptionalDouble,E> supplier)
                                          throws E

Type Parameters:

E -

Parameters:

supplier -

Returns:

Throws:

E - the e

orZero

@Deprecated
public double orZero()

Deprecated.

use orElseZero()

Returns:

orElseZero

public double orElseZero()

orElse

public double orElse(double other)

Parameters:

other -

Returns:

orElseGet

public <E extends Exception> double orElseGet(Throwables.DoubleSupplier<E> other)
                                       throws E

Or else get.

Type Parameters:

E -

Parameters:

other -

Returns:

Throws:

E - the e

orElseThrow

public double orElseThrow()
                   throws NoSuchElementException

Or else throw.

Returns:

Throws:

NoSuchElementException - the no such element exception

orElseThrow

public <X extends Throwable> double orElseThrow(Supplier<? extends X> exceptionSupplier)
                                         throws X

Or else throw.

Type Parameters:

X -

Parameters:

exceptionSupplier -

Returns:

Throws:

X - the x

stream

public DoubleStream stream()

Returns:

toList

public List<Double> toList()

Returns:

toSet

public Set<Double> toSet()

Returns:

toImmutableList

public ImmutableList<Double> toImmutableList()

To immutable list.

Returns:

toImmutableSet

public ImmutableSet<Double> toImmutableSet()

To immutable set.

Returns:

boxed

public u.Optional<Double> boxed()

Returns:

__

public OptionalDouble __()

Returns:

compareTo

public int compareTo(u.OptionalDouble optional)

Specified by:

compareTo in interface Comparable<u.OptionalDouble>

Parameters:

optional -

Returns:

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

Parameters:

obj -

Returns:

hashCode

public int hashCode()

Overrides:

hashCode in class Object

Returns:

toString

public String toString()

Overrides:

toString in class Object

Returns: