ConcurrentHashMap.Reduce(Int64, IBiFunction, IBiFunction) Method

Reference

Definition

Namespace:: Java.Util.Concurrent

Assembly:: Mono.Android.dll

Important

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Returns the result of accumulating the given transformation of all (key, value) pairs using the given reducer to combine values, or null if none.

[Android.Runtime.Register("reduce", "(JLjava/util/function/BiFunction;Ljava/util/function/BiFunction;)Ljava/lang/Object;", "GetReduce_JLjava_util_function_BiFunction_Ljava_util_function_BiFunction_Handler", ApiSince=24)]
[Java.Interop.JavaTypeParameters(new System.String[] { "U" })]
public virtual Java.Lang.Object? Reduce (long parallelismThreshold, Java.Util.Functions.IBiFunction transformer, Java.Util.Functions.IBiFunction reducer);

[<Android.Runtime.Register("reduce", "(JLjava/util/function/BiFunction;Ljava/util/function/BiFunction;)Ljava/lang/Object;", "GetReduce_JLjava_util_function_BiFunction_Ljava_util_function_BiFunction_Handler", ApiSince=24)>]
[<Java.Interop.JavaTypeParameters(new System.String[] { "U" })>]
abstract member Reduce : int64 * Java.Util.Functions.IBiFunction * Java.Util.Functions.IBiFunction -> Java.Lang.Object
override this.Reduce : int64 * Java.Util.Functions.IBiFunction * Java.Util.Functions.IBiFunction -> Java.Lang.Object

Parameters

parallelismThreshold: Int64

the (estimated) number of elements needed for this operation to be executed in parallel

transformer: IBiFunction

a function returning the transformation for an element, or null if there is no transformation (in which case it is not combined)

reducer: IBiFunction

a commutative associative combining function

Returns

Object

the result of accumulating the given transformation of all (key, value) pairs

Attributes: RegisterAttribute JavaTypeParametersAttribute

Remarks

Returns the result of accumulating the given transformation of all (key, value) pairs using the given reducer to combine values, or null if none.

Added in 1.8.

Java documentation for java.util.concurrent.ConcurrentHashMap.reduce(long, java.util.function.BiFunction<? super K, ? super V, ? extends U>, java.util.function.BiFunction<? super U, ? super U, ? extends 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.

Applies to