Uses of Interface
one.util.streamex.LongCollector

Uses of LongCollector in one.util.streamex

Classes in one.util.streamex that implement LongCollector

Modifier and Type	Class	Description
static final class	Internals.LongCollectorImpl<A,R>

Methods in one.util.streamex that return LongCollector

Modifier and Type	Method	Description
default <RR> LongCollector<A,RR>	LongCollector.andThen(Function<R,RR> finisher)	Adapts this collector to perform an additional finishing transformation.
(package private) LongCollector<A,R>	Internals.PartialCollector.asLong(ObjLongConsumer<A> longAccumulator)
static LongCollector<?, OptionalDouble>	LongCollector.averaging()	Returns a LongCollector that produces the arithmetic mean of the input elements or an empty optional if no elements are collected.
static LongCollector<?,Long>	LongCollector.counting()	Returns a LongCollector that counts the number of input elements and returns the result as Long.
static LongCollector<?,Integer>	LongCollector.countingInt()	Returns an LongCollector that counts the number of input elements and returns the result as Integer.
static <K> LongCollector<?, Map<K,long[]>>	LongCollector.groupingBy(LongFunction<? extends K> classifier)	Returns a LongCollector implementing a "group by" operation on input numbers, grouping them according to a classification function, and returning the results in a Map.
static <K, D, A, M extends Map<K,D>> LongCollector<?,M>	LongCollector.groupingBy(LongFunction<? extends K> classifier, Supplier<M> mapFactory, LongCollector<A,D> downstream)	Returns a LongCollector implementing a cascaded "group by" operation on input numbers, grouping them according to a classification function, and then performing a reduction operation on the values associated with a given key using the specified downstream IntCollector.
static <K,D,A> LongCollector<?,Map<K,D>>	LongCollector.groupingBy(LongFunction<? extends K> classifier, LongCollector<A,D> downstream)	Returns a LongCollector implementing a cascaded "group by" operation on input numbers, grouping them according to a classification function, and then performing a reduction operation on the values associated with a given key using the specified downstream IntCollector.
static LongCollector<?,String>	LongCollector.joining(CharSequence delimiter)	Returns a LongCollector that converts the input numbers to strings and concatenates them, separated by the specified delimiter, in encounter order.
static LongCollector<?,String>	LongCollector.joining(CharSequence delimiter, CharSequence prefix, CharSequence suffix)	Returns a LongCollector that converts the input numbers to strings and concatenates them, separated by the specified delimiter, with the specified prefix and suffix, in encounter order.
static <A,R> LongCollector<?,R>	LongCollector.mapping(LongUnaryOperator mapper, LongCollector<A,R> downstream)	Adapts a LongCollector to another one by applying a mapping function to each input element before accumulation.
static <U,A,R> LongCollector<?,R>	LongCollector.mappingToObj(LongFunction<U> mapper, Collector<U,A,R> downstream)	Adapts a Collector accepting elements of type U to a LongCollector by applying a mapping function to each input element before accumulation.
static LongCollector<?, OptionalLong>	LongCollector.max()	Returns a LongCollector that produces the maximal element, described as an OptionalLong.
static LongCollector<?, OptionalLong>	LongCollector.min()	Returns a LongCollector that produces the minimal element, described as an OptionalLong.
static <A,R> LongCollector<A,R>	LongCollector.of(Supplier<A> supplier, ObjLongConsumer<A> longAccumulator, BiConsumer<A,A> merger, Function<A,R> finisher)	Returns a new LongCollector described by the given supplier, accumulator, merger, and finisher functions.
static <R> LongCollector<R,R>	LongCollector.of(Supplier<R> supplier, ObjLongConsumer<R> longAccumulator, BiConsumer<R,R> merger)	Returns a new LongCollector described by the given supplier, accumulator, and merger functions.
static <A,R> LongCollector<?,R>	LongCollector.of(Collector<Long,A,R> collector)	Adapts a Collector which accepts elements of type Long to a LongCollector.
static LongCollector<?, Map<Boolean,long[]>>	LongCollector.partitioningBy(LongPredicate predicate)	Returns a LongCollector which partitions the input elements according to a LongPredicate, and organizes them into a Map<Boolean, long[]>.
static <A,D> LongCollector<?, Map<Boolean,D>>	LongCollector.partitioningBy(LongPredicate predicate, LongCollector<A,D> downstream)	Returns a LongCollector which partitions the input numbers according to a LongPredicate, reduces the values in each partition according to another IntCollector, and organizes them into a Map<Boolean, D> whose values are the result of the downstream reduction.
static LongCollector<?,Long>	LongCollector.reducing(long identity, LongBinaryOperator op)	Returns a LongCollector which performs a reduction of its input numbers under a specified IntBinaryOperator using the provided identity.
static LongCollector<?, OptionalLong>	LongCollector.reducing(LongBinaryOperator op)	Returns a LongCollector which performs a reduction of its input numbers under a specified LongBinaryOperator.
static LongCollector<?, LongSummaryStatistics>	LongCollector.summarizing()	Returns a LongCollector which returns summary statistics for the input elements.
static LongCollector<?,Long>	LongCollector.summing()	Returns a LongCollector that produces the sum of the input elements.
static LongCollector<?,long[]>	LongCollector.toArray()	Returns a LongCollector that produces the array of the input elements.
static LongCollector<?, boolean[]>	LongCollector.toBooleanArray(LongPredicate predicate)	Returns a LongCollector which produces a boolean array containing the results of applying the given predicate to the input elements, in encounter order.

Methods in one.util.streamex with parameters of type LongCollector

Modifier and Type	Method	Description
<A,R> R	LongStreamEx.collect(LongCollector<A,R> collector)	Performs a mutable reduction operation on the elements of this stream using an LongCollector which encapsulates the supplier, accumulator and merger functions making easier to reuse collection strategies.
static <K, D, A, M extends Map<K,D>> LongCollector<?,M>	LongCollector.groupingBy(LongFunction<? extends K> classifier, Supplier<M> mapFactory, LongCollector<A,D> downstream)	Returns a LongCollector implementing a cascaded "group by" operation on input numbers, grouping them according to a classification function, and then performing a reduction operation on the values associated with a given key using the specified downstream IntCollector.
static <K,D,A> LongCollector<?,Map<K,D>>	LongCollector.groupingBy(LongFunction<? extends K> classifier, LongCollector<A,D> downstream)	Returns a LongCollector implementing a cascaded "group by" operation on input numbers, grouping them according to a classification function, and then performing a reduction operation on the values associated with a given key using the specified downstream IntCollector.
static <A,R> LongCollector<?,R>	LongCollector.mapping(LongUnaryOperator mapper, LongCollector<A,R> downstream)	Adapts a LongCollector to another one by applying a mapping function to each input element before accumulation.
static <A,D> LongCollector<?, Map<Boolean,D>>	LongCollector.partitioningBy(LongPredicate predicate, LongCollector<A,D> downstream)	Returns a LongCollector which partitions the input numbers according to a LongPredicate, reduces the values in each partition according to another IntCollector, and organizes them into a Map<Boolean, D> whose values are the result of the downstream reduction.