Interface LongStream

All Superinterfaces:

AutoCloseable, BaseStream<Long, LongStream>

public interface LongStream
extends BaseStream<Long, LongStream>

A sequence of long 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(LongPredicate predicate)
boolean	anyMatch(LongPredicate predicate)
DoubleStream	asDoubleStream()
OptionalDouble	average()
Stream<Long>	boxed()
<R> R	collect(Supplier<R> supplier, ObjLongConsumer<R> accumulator, BiConsumer<R,R> combiner)
static LongStream	concat(LongStream a, LongStream b)	The elements of a, then those of b.
long	count()
LongStream	distinct()
LongStream	dropWhile(LongPredicate predicate)
static LongStream	empty()
LongStream	filter(LongPredicate predicate)
OptionalLong	findAny()
OptionalLong	findFirst()
LongStream	flatMap(LongFunction<? extends LongStream> mapper)
void	forEach(LongConsumer action)
void	forEachOrdered(LongConsumer action)
static LongStream	generate(LongSupplier s)	The values s answers, one call per element, without end.
static LongStream	iterate(long seed, LongPredicate hasNext, LongUnaryOperator next)	As iterate(long, LongUnaryOperator), ending before the first value hasNext refuses.
static LongStream	iterate(long seed, LongUnaryOperator f)	seed, then f applied to it, then f applied to that, without end.
PrimitiveIterator.OfLong	iterator()
LongStream	limit(long maxSize)
LongStream	map(LongUnaryOperator mapper)
DoubleStream	mapToDouble(LongToDoubleFunction mapper)
IntStream	mapToInt(LongToIntFunction mapper)
<U> Stream<U>	mapToObj(LongFunction<? extends U> mapper)
OptionalLong	max()
OptionalLong	min()
boolean	noneMatch(LongPredicate predicate)
static LongStream	of(long value)
static LongStream	of(long... values)
LongStream	parallel()	Declared again with this type; see sequential().
LongStream	peek(LongConsumer action)
static LongStream	range(long startInclusive, long endExclusive)	The values from startInclusive up to, not including, endExclusive, in steps of one.
static LongStream	rangeClosed(long startInclusive, long endInclusive)	The values from startInclusive up to and including endInclusive, in steps of one.
long	reduce(long identity, LongBinaryOperator op)
OptionalLong	reduce(LongBinaryOperator op)
LongStream	sequential()	Declared again with this type, as the JDK does: a call compiled against the JDK names LongStream.sequential() answering LongStream, and the method inherited from BaseStream answers its type variable, which is another descriptor.
LongStream	skip(long n)
LongStream	sorted()
long	sum()
LongSummaryStatistics	summaryStatistics()
LongStream	takeWhile(LongPredicate predicate)
long[]	toArray()

Methods inherited from interface BaseStream

close, isParallel, onClose, unordered

Method Details

sequential

LongStream sequential()

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

Specified by:

sequential in interface BaseStream<Long, LongStream>

parallel

LongStream parallel()

Declared again with this type; see sequential().

Specified by:

parallel in interface BaseStream<Long, LongStream>

filter

LongStream filter(LongPredicate predicate)

map

LongStream map(LongUnaryOperator mapper)

mapToObj

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

mapToInt

IntStream mapToInt(LongToIntFunction mapper)

mapToDouble

DoubleStream mapToDouble(LongToDoubleFunction mapper)

flatMap

LongStream flatMap(LongFunction<? extends LongStream> mapper)

distinct

LongStream distinct()

sorted

LongStream sorted()

peek

LongStream peek(LongConsumer action)

limit

LongStream limit(long maxSize)

skip

LongStream skip(long n)

takeWhile

LongStream takeWhile(LongPredicate predicate)

dropWhile

LongStream dropWhile(LongPredicate predicate)

forEach

void forEach(LongConsumer action)

forEachOrdered

void forEachOrdered(LongConsumer action)

toArray

long[] toArray()

reduce

long reduce(long identity,
 LongBinaryOperator op)

reduce

OptionalLong reduce(LongBinaryOperator op)

collect

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

sum

long sum()

min

OptionalLong min()

max

OptionalLong max()

count

long count()

average

OptionalDouble average()

summaryStatistics

LongSummaryStatistics summaryStatistics()

anyMatch

boolean anyMatch(LongPredicate predicate)

allMatch

boolean allMatch(LongPredicate predicate)

noneMatch

boolean noneMatch(LongPredicate predicate)

findFirst

OptionalLong findFirst()

findAny

OptionalLong findAny()

asDoubleStream

DoubleStream asDoubleStream()

boxed

Stream<Long> boxed()

iterator

PrimitiveIterator.OfLong iterator()

Specified by:

iterator in interface BaseStream<Long, LongStream>

empty

static LongStream empty()

of

static LongStream of(long value)

of

static LongStream of(long... values)

iterate

static LongStream iterate(long seed,
 LongUnaryOperator f)

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

iterate

static LongStream iterate(long seed,
 LongPredicate hasNext,
 LongUnaryOperator next)

As iterate(long, LongUnaryOperator), ending before the first value hasNext refuses.

generate

static LongStream generate(LongSupplier s)

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

range

static LongStream range(long startInclusive,
 long endExclusive)

The values from startInclusive up to, not including, endExclusive, in steps of one. Empty when startInclusive is not below endExclusive.

rangeClosed

static LongStream rangeClosed(long startInclusive,
 long endInclusive)

The values from startInclusive up to and including endInclusive, in steps of one. Empty when startInclusive is above endInclusive.

concat

static LongStream concat(LongStream a,
 LongStream b)

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