Interface DoubleStream

All Superinterfaces:

AutoCloseable, BaseStream<Double, DoubleStream>

public interface DoubleStream
extends BaseStream<Double, DoubleStream>

A sequence of double values to which operations are applied one stage at a time, evaluated lazily, one element at a time, when a terminal operation asks for them.

Streams here are sequential: parallel() answers the same stream, which the JDK allows a parallel stream to be.

Method Summary

Modifier and Type	Method	Description
boolean	allMatch(DoublePredicate predicate)
boolean	anyMatch(DoublePredicate predicate)
OptionalDouble	average()
Stream<Double>	boxed()
<R> R	collect(Supplier<R> supplier, ObjDoubleConsumer<R> accumulator, BiConsumer<R,R> combiner)
static DoubleStream	concat(DoubleStream a, DoubleStream b)	The elements of a, then those of b.
long	count()
DoubleStream	distinct()
DoubleStream	dropWhile(DoublePredicate predicate)
static DoubleStream	empty()
DoubleStream	filter(DoublePredicate predicate)
OptionalDouble	findAny()
OptionalDouble	findFirst()
DoubleStream	flatMap(DoubleFunction<? extends DoubleStream> mapper)
void	forEach(DoubleConsumer action)
void	forEachOrdered(DoubleConsumer action)
static DoubleStream	generate(DoubleSupplier s)	The values s answers, one call per element, without end.
static DoubleStream	iterate(double seed, DoublePredicate hasNext, DoubleUnaryOperator next)	As iterate(double, DoubleUnaryOperator), ending before the first value hasNext refuses.
static DoubleStream	iterate(double seed, DoubleUnaryOperator f)	seed, then f applied to it, then f applied to that, without end.
PrimitiveIterator.OfDouble	iterator()
DoubleStream	limit(long maxSize)
DoubleStream	map(DoubleUnaryOperator mapper)
IntStream	mapToInt(DoubleToIntFunction mapper)
LongStream	mapToLong(DoubleToLongFunction mapper)
<U> Stream<U>	mapToObj(DoubleFunction<? extends U> mapper)
OptionalDouble	max()
OptionalDouble	min()
boolean	noneMatch(DoublePredicate predicate)
static DoubleStream	of(double value)
static DoubleStream	of(double... values)
DoubleStream	parallel()	Declared again with this type; see sequential().
DoubleStream	peek(DoubleConsumer action)
double	reduce(double identity, DoubleBinaryOperator op)
OptionalDouble	reduce(DoubleBinaryOperator op)
DoubleStream	sequential()	Declared again with this type, as the JDK does: a call compiled against the JDK names DoubleStream.sequential() answering DoubleStream, and the method inherited from BaseStream answers its type variable, which is another descriptor.
DoubleStream	skip(long n)
DoubleStream	sorted()
double	sum()
DoubleSummaryStatistics	summaryStatistics()
DoubleStream	takeWhile(DoublePredicate predicate)
double[]	toArray()

Methods inherited from interface BaseStream

close, isParallel, onClose, unordered

Method Details

sequential

DoubleStream sequential()

Declared again with this type, as the JDK does: a call compiled against the JDK names DoubleStream.sequential() answering DoubleStream, and the method inherited from BaseStream answers its type variable, which is another descriptor.

Specified by:

sequential in interface BaseStream<Double, DoubleStream>

parallel

DoubleStream parallel()

Declared again with this type; see sequential().

Specified by:

parallel in interface BaseStream<Double, DoubleStream>

filter

DoubleStream filter(DoublePredicate predicate)

map

DoubleStream map(DoubleUnaryOperator mapper)

mapToObj

<U> Stream<U> mapToObj(DoubleFunction<? extends U> mapper)

mapToInt

IntStream mapToInt(DoubleToIntFunction mapper)

mapToLong

LongStream mapToLong(DoubleToLongFunction mapper)

flatMap

DoubleStream flatMap(DoubleFunction<? extends DoubleStream> mapper)

distinct

DoubleStream distinct()

sorted

DoubleStream sorted()

peek

DoubleStream peek(DoubleConsumer action)

limit

DoubleStream limit(long maxSize)

skip

DoubleStream skip(long n)

takeWhile

DoubleStream takeWhile(DoublePredicate predicate)

dropWhile

DoubleStream dropWhile(DoublePredicate predicate)

forEach

void forEach(DoubleConsumer action)

forEachOrdered

void forEachOrdered(DoubleConsumer action)

toArray

double[] toArray()

reduce

double reduce(double identity,
 DoubleBinaryOperator op)

reduce

OptionalDouble reduce(DoubleBinaryOperator op)

collect

<R> R collect(Supplier<R> supplier,
 ObjDoubleConsumer<R> accumulator,
 BiConsumer<R,R> combiner)

sum

double sum()

min

OptionalDouble min()

max

OptionalDouble max()

count

long count()

average

OptionalDouble average()

summaryStatistics

DoubleSummaryStatistics summaryStatistics()

anyMatch

boolean anyMatch(DoublePredicate predicate)

allMatch

boolean allMatch(DoublePredicate predicate)

noneMatch

boolean noneMatch(DoublePredicate predicate)

findFirst

OptionalDouble findFirst()

findAny

OptionalDouble findAny()

boxed

Stream<Double> boxed()

iterator

PrimitiveIterator.OfDouble iterator()

Specified by:

iterator in interface BaseStream<Double, DoubleStream>

empty

static DoubleStream empty()

of

static DoubleStream of(double value)

of

static DoubleStream of(double... values)

iterate

static DoubleStream iterate(double seed,
 DoubleUnaryOperator f)

seed, then f applied to it, then f applied to that, without end.

iterate

static DoubleStream iterate(double seed,
 DoublePredicate hasNext,
 DoubleUnaryOperator next)

As iterate(double, DoubleUnaryOperator), ending before the first value hasNext refuses.

generate

static DoubleStream generate(DoubleSupplier s)

The values s answers, one call per element, without end.

concat

static DoubleStream concat(DoubleStream a,
 DoubleStream b)

The elements of a, then those of b. Closing the result closes both.