DryadLinqQueryable.LongCountAsQuery(TSource) Method (IQueryable(TSource), Expression(Func(TSource, Boolean)))

DryadLinqQueryable.LongCountAsQuery<TSource> Method (IQueryable<TSource>, Expression<Func<TSource, Boolean>>)

DryadLINQ documentation

Same as LongCount<TSource>(IQueryable<TSource>, Expression<Func<TSource, Boolean>>), but returns an IQueryable<Int64> containing a single element.

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<long> LongCountAsQuery<TSource>(
	this IQueryable<TSource> source,
	Expression<Func<TSource, bool>> predicate
)

<ExtensionAttribute> 
Public Shared Function LongCountAsQuery(Of TSource) ( 
	source As IQueryable(Of TSource),
	predicate As Expression(Of Func(Of TSource, Boolean))
) As IQueryable(Of Long)

public:
[ExtensionAttribute]
generic<typename TSource>
static IQueryable<long long>^ LongCountAsQuery(
	IQueryable<TSource>^ source, 
	Expression<Func<TSource, bool>^>^ predicate
)

Parameters

source: Type: System.Linq.IQueryable<TSource>
The input sequence
predicate: Type: System.Linq.Expressions.Expression<Func<TSource, Boolean>>
A predicate to test each element for a condition

Type Parameters

TSource: The type of the elements of source

Return Value

Type: IQueryable<Int64>
The number of elements in the input sequence satisfying the predicate

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

LongCountAsQuery Overload

Microsoft.Research.DryadLinq Namespace