Collectors.Reducing Method

Definition

Namespace:

Java.Util.Streams

Assembly:

Mono.Android.dll

Overloads

Reducing(Object, IFunction, IBinaryOperator)	Returns a Collector which performs a reduction of its input elements under a specified mapping function and BinaryOperator.
Reducing(IBinaryOperator)	Returns a Collector which performs a reduction of its input elements under a specified BinaryOperator.
Reducing(Object, IBinaryOperator)	Returns a Collector which performs a reduction of its input elements under a specified BinaryOperator using the provided identity.

Reducing(Object, IFunction, IBinaryOperator)

Returns a Collector which performs a reduction of its input elements under a specified mapping function and BinaryOperator.

[Android.Runtime.Register("reducing", "(Ljava/lang/Object;Ljava/util/function/Function;Ljava/util/function/BinaryOperator;)Ljava/util/stream/Collector;", "", ApiSince=24)]
[Java.Interop.JavaTypeParameters(new System.String[] { "T", "U" })]
public static Java.Util.Streams.ICollector? Reducing (Java.Lang.Object? identity, Java.Util.Functions.IFunction? mapper, Java.Util.Functions.IBinaryOperator? op);

[<Android.Runtime.Register("reducing", "(Ljava/lang/Object;Ljava/util/function/Function;Ljava/util/function/BinaryOperator;)Ljava/util/stream/Collector;", "", ApiSince=24)>]
[<Java.Interop.JavaTypeParameters(new System.String[] { "T", "U" })>]
static member Reducing : Java.Lang.Object * Java.Util.Functions.IFunction * Java.Util.Functions.IBinaryOperator -> Java.Util.Streams.ICollector

Parameters

identity

Object

the identity value for the reduction (also, the value that is returned when there are no input elements)

mapper

IFunction

a mapping function to apply to each input value

op

IBinaryOperator

a BinaryOperator<U> used to reduce the mapped values

Returns

ICollector

a Collector implementing the map-reduce operation

Attributes

RegisterAttribute JavaTypeParametersAttribute

Remarks

Returns a Collector which performs a reduction of its input elements under a specified mapping function and BinaryOperator. This is a generalization of #reducing(Object, BinaryOperator) which allows a transformation of the elements before reduction.

Java documentation for java.util.stream.Collectors.reducing(U, java.util.function.Function<? super T, ? extends U>, java.util.function.BinaryOperator<U>).

Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.

Reducing(IBinaryOperator)

Returns a Collector which performs a reduction of its input elements under a specified BinaryOperator.

[Android.Runtime.Register("reducing", "(Ljava/util/function/BinaryOperator;)Ljava/util/stream/Collector;", "", ApiSince=24)]
[Java.Interop.JavaTypeParameters(new System.String[] { "T" })]
public static Java.Util.Streams.ICollector? Reducing (Java.Util.Functions.IBinaryOperator? op);

[<Android.Runtime.Register("reducing", "(Ljava/util/function/BinaryOperator;)Ljava/util/stream/Collector;", "", ApiSince=24)>]
[<Java.Interop.JavaTypeParameters(new System.String[] { "T" })>]
static member Reducing : Java.Util.Functions.IBinaryOperator -> Java.Util.Streams.ICollector

Parameters

op

IBinaryOperator

a BinaryOperator<T> used to reduce the input elements

Returns

ICollector

a Collector which implements the reduction operation

Attributes

RegisterAttribute JavaTypeParametersAttribute

Remarks

Returns a Collector which performs a reduction of its input elements under a specified BinaryOperator. The result is described as an Optional<T>.

Java documentation for java.util.stream.Collectors.reducing(java.util.function.BinaryOperator<T>).

Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.

Reducing(Object, IBinaryOperator)

Returns a Collector which performs a reduction of its input elements under a specified BinaryOperator using the provided identity.

[Android.Runtime.Register("reducing", "(Ljava/lang/Object;Ljava/util/function/BinaryOperator;)Ljava/util/stream/Collector;", "", ApiSince=24)]
[Java.Interop.JavaTypeParameters(new System.String[] { "T" })]
public static Java.Util.Streams.ICollector? Reducing (Java.Lang.Object? identity, Java.Util.Functions.IBinaryOperator? op);

[<Android.Runtime.Register("reducing", "(Ljava/lang/Object;Ljava/util/function/BinaryOperator;)Ljava/util/stream/Collector;", "", ApiSince=24)>]
[<Java.Interop.JavaTypeParameters(new System.String[] { "T" })>]
static member Reducing : Java.Lang.Object * Java.Util.Functions.IBinaryOperator -> Java.Util.Streams.ICollector

Parameters

identity

Object

the identity value for the reduction (also, the value that is returned when there are no input elements)

op

IBinaryOperator

a BinaryOperator<T> used to reduce the input elements

Returns

ICollector

a Collector which implements the reduction operation

Attributes

RegisterAttribute JavaTypeParametersAttribute

Remarks

Returns a Collector which performs a reduction of its input elements under a specified BinaryOperator using the provided identity.

Java documentation for java.util.stream.Collectors.reducing(T, java.util.function.BinaryOperator<T>).

Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.