boolean allMatch(DoublePredicate predicate)
Returns whether all elements of this stream match the provided predicate.
boolean anyMatch(DoublePredicate predicate)
Returns whether any elements of this stream match the provided predicate.
OptionalDouble average()
Returns an OptionalDouble describing the arithmetic mean of elements of this stream, or an empty optional if this stream is empty.
Stream<Double> boxed()
Returns a Stream consisting of the elements of this stream, boxed to Double.
static DoubleStream.Builder builder()
Returns a builder for a DoubleStream.
<R> R collect(Supplier<R> supplier, ObjDoubleConsumer<R> accumulator, BiConsumer<R,R> combiner) static DoubleStream concat(DoubleStream a, DoubleStream b)
Creates a lazily concatenated stream whose elements are all the elements of the first stream followed by all the elements of the second stream.
long count()
Returns the count of elements in this stream.
DoubleStream distinct()
Returns a stream consisting of the distinct elements of this stream.
static DoubleStream empty()
Returns an empty sequential DoubleStream.
DoubleStream filter(DoublePredicate predicate)
Returns a stream consisting of the elements of this stream that match the given predicate.
OptionalDouble findAny()
Returns an
OptionalDouble
describing some element of the stream, or an empty
OptionalDouble
if the stream is empty.
OptionalDouble findFirst()
Returns an
OptionalDouble
describing the first element of this stream, or an empty
OptionalDouble
if the stream is empty.
DoubleStream flatMap(DoubleFunction<? extends DoubleStream> mapper)
Returns a stream consisting of the results of replacing each element of this stream with the contents of a mapped stream produced by applying the provided mapping function to each element.
void forEach(DoubleConsumer action)
Performs an action for each element of this stream.
void forEachOrdered(DoubleConsumer action)
Performs an action for each element of this stream, guaranteeing that each element is processed in encounter order for streams that have a defined encounter order.
static DoubleStream generate(DoubleSupplier s)
Returns an infinite sequential unordered stream where each element is generated by the provided DoubleSupplier.
static DoubleStream iterate(double seed, DoubleUnaryOperator f)
Returns an infinite sequential ordered DoubleStream produced by iterative application of a function f to an initial element seed, producing a Stream consisting of seed, f(seed), f(f(seed)), etc.
PrimitiveIterator.OfDouble iterator()
Returns an iterator for the elements of this stream.
DoubleStream limit(long maxSize)
Returns a stream consisting of the elements of this stream, truncated to be no longer than maxSize in length.
DoubleStream map(DoubleUnaryOperator mapper)
Returns a stream consisting of the results of applying the given function to the elements of this stream.
IntStream mapToInt(DoubleToIntFunction mapper)
Returns an IntStream consisting of the results of applying the given function to the elements of this stream.
LongStream mapToLong(DoubleToLongFunction mapper)
Returns a LongStream consisting of the results of applying the given function to the elements of this stream.
<U> Stream<U> mapToObj(DoubleFunction<? extends U> mapper)
Returns an object-valued Stream consisting of the results of applying the given function to the elements of this stream.
OptionalDouble max()
Returns an OptionalDouble describing the maximum element of this stream, or an empty OptionalDouble if this stream is empty.
OptionalDouble min()
Returns an OptionalDouble describing the minimum element of this stream, or an empty OptionalDouble if this stream is empty.
boolean noneMatch(DoublePredicate predicate)
Returns whether no elements of this stream match the provided predicate.
static DoubleStream of(double... values)
Returns a sequential ordered stream whose elements are the specified values.
static DoubleStream of(double t)
Returns a sequential DoubleStream containing a single element.
DoubleStream parallel()
Returns an equivalent stream that is parallel.
DoubleStream peek(DoubleConsumer action)
Returns a stream consisting of the elements of this stream, additionally performing the provided action on each element as elements are consumed from the resulting stream.
OptionalDouble reduce(DoubleBinaryOperator op)
Performs a
reductionon the elements of this stream, using an
associativeaccumulation function, and returns an
OptionalDouble
describing the reduced value, if any.
double reduce(double identity, DoubleBinaryOperator op)
Performs a
reductionon the elements of this stream, using the provided identity value and an
associativeaccumulation function, and returns the reduced value.
DoubleStream sequential()
Returns an equivalent stream that is sequential.
DoubleStream skip(long n)
Returns a stream consisting of the remaining elements of this stream after discarding the first n elements of the stream.
DoubleStream sorted()
Returns a stream consisting of the elements of this stream in sorted order.
Spliterator.OfDouble spliterator()
Returns a spliterator for the elements of this stream.
double sum()
Returns the sum of elements in this stream.
DoubleSummaryStatistics summaryStatistics()
Returns a DoubleSummaryStatistics describing various summary data about the elements of this stream.
double[] toArray()
Returns an array containing the elements of this stream.
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