DryadLinqQueryable.SumAsQuery(TSource) Method (IQueryable(TSource), Expression(Func(TSource, Decimal)))

DryadLinqQueryable SumAsQuery TSource Method (IQueryable TSource , Expression Func TSource, Decimal )

DryadLINQ documentation

Same as Sum TSource (IQueryable TSource , Expression Func TSource, Decimal ), but returns an IQueryable<Decimal> containing a single element. Computes the sum of a set of decimal 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: 0.1.2.0 (0.1.2.0)

Syntax

C++

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public static IQueryable<decimal> SumAsQuery<TSource>(
	this IQueryable<TSource> source,
	Expression<Func<TSource, decimal>> selector
)

public static IQueryable<decimal> SumAsQuery<TSource>(
	this IQueryable<TSource> source,
	Expression<Func<TSource, decimal>> selector
)

<ExtensionAttribute> 
Public Shared Function SumAsQuery(Of TSource) ( 
	source As IQueryable(Of TSource),
	selector As Expression(Of Func(Of TSource, Decimal))
) As IQueryable(Of Decimal)

<ExtensionAttribute> 
Public Shared Function SumAsQuery(Of TSource) ( 
	source As IQueryable(Of TSource),
	selector As Expression(Of Func(Of TSource, Decimal))
) As IQueryable(Of Decimal)

public:
[ExtensionAttribute]
generic<typename TSource>
static IQueryable<Decimal>^ SumAsQuery(
	IQueryable<TSource>^ source, 
	Expression<Func<TSource, Decimal>^>^ selector
)

public:
[ExtensionAttribute]
generic<typename TSource>
static IQueryable<Decimal>^ SumAsQuery(
	IQueryable<TSource>^ source, 
	Expression<Func<TSource, Decimal>^>^ selector
)

Parameters

source: Type: System.Linq IQueryable TSource
The input dataset

selector: Type: System.Linq.Expressions Expression Func TSource, Decimal
A transformation function to apply to each element

Type Parameters

TSource: The type of the elements of source

Return Value

Type: IQueryable Decimal
The sum 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).