ParallelEnumerable.Average(Of TSource) Method (ParallelQuery(Of TSource), Func(Of TSource, Int64))
Computes in parallel the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.
Assembly: System.Core (in System.Core.dll)
'Declaration <ExtensionAttribute> _ Public Shared Function Average(Of TSource) ( _ source As ParallelQuery(Of TSource), _ selector As Func(Of TSource, Long) _ ) As Double
The type of elements of source.
- Type: System.Linq.ParallelQuery(Of )
A sequence of values that are used to calculate an average.
Return ValueType: System.Double
The average of the sequence of values.
Usage NoteIn Visual Basic and C#, you can call this method as an instance method on any object of type ParallelQuery(Of ). When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).
The query was canceled with the token passed in through WithCancellation.
source or selector is a null reference (Nothing in Visual Basic).
The sum or count of the elements in the sequence is larger than MaxValue. -or- One or more exceptions occurred during the evaluation of the query.
source contains no elements.
(Thrown as inner exception in an AggregateException). The selector function returns a value greater than MaxValue for the element type.