ParallelEnumerable.Aggregate<TSource, TAccumulate> Method (ParallelQuery<TSource>, TAccumulate, Func<TAccumulate, TSource, TAccumulate>)
.NET Framework (current version)
Applies in parallel an accumulator function over a sequence. The specified seed value is used as the initial accumulator value.
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: TAccumulateThe 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 8
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Windows Phone
Available since 8.1
Available since 8
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Windows Phone
Available since 8.1
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