DryadLinqQueryable.AggregateAsQuery(TSource, TAccumulate, TResult) Method (IQueryable(TSource), TAccumulate, Expression(Func(TAccumulate, TSource, TAccumulate)), Expression(Func(TAccumulate, TResult)))

DryadLinqQueryable AggregateAsQuery TSource, TAccumulate, TResult Method (IQueryable TSource , TAccumulate, Expression Func TAccumulate, TSource, TAccumulate , Expression Func TAccumulate, TResult )

DryadLINQ documentation

Same as Aggregate TSource, TAccumulate, TResult (IQueryable TSource , TAccumulate, Expression Func TAccumulate, TSource, TAccumulate , Expression Func TAccumulate, TResult ), but returns an IQueryable<TResult> containing a single element.

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<TResult> AggregateAsQuery<TSource, TAccumulate, TResult>(
	this IQueryable<TSource> source,
	TAccumulate seed,
	Expression<Func<TAccumulate, TSource, TAccumulate>> func,
	Expression<Func<TAccumulate, TResult>> selector
)

public static IQueryable<TResult> AggregateAsQuery<TSource, TAccumulate, TResult>(
	this IQueryable<TSource> source,
	TAccumulate seed,
	Expression<Func<TAccumulate, TSource, TAccumulate>> func,
	Expression<Func<TAccumulate, TResult>> selector
)

<ExtensionAttribute> 
Public Shared Function AggregateAsQuery(Of TSource, TAccumulate, TResult) ( 
	source As IQueryable(Of TSource),
	seed As TAccumulate,
	func As Expression(Of Func(Of TAccumulate, TSource, TAccumulate)),
	selector As Expression(Of Func(Of TAccumulate, TResult))
) As IQueryable(Of TResult)

<ExtensionAttribute> 
Public Shared Function AggregateAsQuery(Of TSource, TAccumulate, TResult) ( 
	source As IQueryable(Of TSource),
	seed As TAccumulate,
	func As Expression(Of Func(Of TAccumulate, TSource, TAccumulate)),
	selector As Expression(Of Func(Of TAccumulate, TResult))
) As IQueryable(Of TResult)

public:
[ExtensionAttribute]
generic<typename TSource, typename TAccumulate, typename TResult>
static IQueryable<TResult>^ AggregateAsQuery(
	IQueryable<TSource>^ source, 
	TAccumulate seed, 
	Expression<Func<TAccumulate, TSource, TAccumulate>^>^ func, 
	Expression<Func<TAccumulate, TResult>^>^ selector
)

public:
[ExtensionAttribute]
generic<typename TSource, typename TAccumulate, typename TResult>
static IQueryable<TResult>^ AggregateAsQuery(
	IQueryable<TSource>^ source, 
	TAccumulate seed, 
	Expression<Func<TAccumulate, TSource, TAccumulate>^>^ func, 
	Expression<Func<TAccumulate, TResult>^>^ selector
)

Parameters

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

seed: Type: TAccumulate
The initial accumulator value

func: Type: System.Linq.Expressions Expression Func TAccumulate, TSource, TAccumulate
An accumualator function to apply to each element

selector: Type: System.Linq.Expressions Expression Func TAccumulate, TResult
A function to transform the final accumulator value into the result value

Type Parameters

TSource: The type of the elements of source
TAccumulate: The type of the accumulator value
TResult: The type of the final result

Return Value

Type: IQueryable TResult
The result of applying selector to the accumulator value

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).