Uses of Interface
one.util.streamex.LongCollector

Uses of LongCollector in one.util.streamex

Methods in one.util.streamex that return LongCollector

Modifier and Type	Method and Description
default <RR> LongCollector<A,RR>	LongCollector.andThen(Function<R,RR> finisher) Adapts this collector to perform an additional finishing transformation.
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> 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 <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 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<?,R>	LongCollector.of(Collector<Long,A,R> collector) Adapts a Collector which accepts elements of type Long to a LongCollector.
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 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<?,OptionalLong>	LongCollector.reducing(LongBinaryOperator op) Returns a LongCollector which performs a reduction of its input numbers under a specified LongBinaryOperator.
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<?,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 and 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> 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 <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 <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.