Aggregate(TSource, TAccumulate) Method (ParallelQuery(TSource), TAccumulate, Func(TAccumulate, TSource, TAccumulate))

ParallelEnumerable.Aggregate<TSource, TAccumulate> Method (ParallelQuery<TSource>, TAccumulate, Func<TAccumulate, TSource, TAccumulate>)

 

Applies in parallel an accumulator function over a sequence. The specified seed value is used as the initial accumulator value.

Namespace:   System.Linq
Assembly:  System.Core (in System.Core.dll)

public static TAccumulate Aggregate<TSource, TAccumulate>(
	this ParallelQuery<TSource> source,
	TAccumulate seed,
	Func<TAccumulate, TSource, TAccumulate> func
)

Parameters

source
Type: System.Linq.ParallelQuery<TSource>

A sequence to aggregate over.

seed
Type: TAccumulate

The initial accumulator value.

func
Type: System.Func<TAccumulate, TSource, TAccumulate>

An accumulator function to be invoked on each element.

Return Value

Type: TAccumulate

The final accumulator value.

Type Parameters

TSource

The type of the elements of source.

TAccumulate

The type of the accumulator value.

Exception Condition
OperationCanceledException

The query was canceled with the token passed in through WithCancellation.

ArgumentNullException

source or func is a null reference (Nothing in Visual Basic).

AggregateException

One or more exceptions occurred during the evaluation of the query.

InvalidOperationException

source contains no elements.

Universal Windows Platform
Available since 4.5
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Windows Phone
Available since 8.1
Return to top
Show:
© 2016 Microsoft