DryadLinqQueryable.AverageAsQuery(TSource) Method (IQueryable(TSource), Expression(Func(TSource, Nullable(Int64))))

DryadLinqQueryable.AverageAsQuery<TSource> Method (IQueryable<TSource>, Expression<Func<TSource, Nullable<Int64>>>)

DryadLINQ documentation

Same as Average<TSource>(IQueryable<TSource>, Expression<Func<TSource, Nullable<Int64>>>), but returns an IQueryable<Nullable<Double>> containing a single element. Computes the average of a set of nullable Int64 values that is obtained by applying a function to each element of the input dataset.

Namespace: Microsoft.Research.DryadLinq
Assembly: Microsoft.Research.DryadLinq (in Microsoft.Research.DryadLinq.dll) Version: 0.2.1.0 (0.2.1.0)

Syntax

C++

Copy

public static IQueryable<Nullable<double>> AverageAsQuery<TSource>(
	this IQueryable<TSource> source,
	Expression<Func<TSource, Nullable<long>>> selector
)

<ExtensionAttribute> 
Public Shared Function AverageAsQuery(Of TSource) ( 
	source As IQueryable(Of TSource),
	selector As Expression(Of Func(Of TSource, Nullable(Of Long)))
) As IQueryable(Of Nullable(Of Double))

public:
[ExtensionAttribute]
generic<typename TSource>
static IQueryable<Nullable<double>>^ AverageAsQuery(
	IQueryable<TSource>^ source, 
	Expression<Func<TSource, Nullable<long long>>^>^ selector
)

Parameters

source: Type: System.Linq.IQueryable<TSource>
The input dataset
selector: Type: System.Linq.Expressions.Expression<Func<TSource, Nullable<Int64>>>
A transformation function to apply to each element

Type Parameters

TSource: The type of the elements of source

Return Value

Type: IQueryable<Nullable<Double>>
The average of the values after applying the transformation function

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IQueryable<TSource>. 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).

Reference

DryadLinqQueryable Class

AverageAsQuery Overload

Microsoft.Research.DryadLinq Namespace