ParallelEnumerable.Any Method

Definition

Namespace:

System.Linq

Assembly:

System.Linq.Parallel.dll

Determines whether a parallel sequence contains any elements.

Overloads

Any<TSource>(ParallelQuery<TSource>)	Determines whether a parallel sequence contains any elements.
Any<TSource>(ParallelQuery<TSource>, Func<TSource,Boolean>)	Determines in parallel whether any element of a sequence satisfies a condition.

Any<TSource>(ParallelQuery<TSource>)

Source:

ParallelEnumerable.cs

Determines whether a parallel sequence contains any elements.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static bool Any(System::Linq::ParallelQuery<TSource> ^ source);

public static bool Any<TSource> (this System.Linq.ParallelQuery<TSource> source);

static member Any : System.Linq.ParallelQuery<'Source> -> bool

<Extension()>
Public Function Any(Of TSource) (source As ParallelQuery(Of TSource)) As Boolean

Type Parameters

TSource

The type of elements of source.

Parameters

source

ParallelQuery<TSource>

The sequence to check for emptiness.

Returns

Boolean

true if the source sequence contains any elements; otherwise, false.

Exceptions

OperationCanceledException

The query was canceled with the token passed in through WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken).

ArgumentNullException

source is a null reference (Nothing in Visual Basic).

AggregateException

One or more exceptions occurred during the evaluation of the query.

Remarks

This overload of the Any method causes a fully-buffered merge to be performed before the result is returned. The merge behavior can impact performance or cause an out of memory exception in large enumerables. To avoid the merge behavior, use the overload of Any that takes a Func parameter, or else use an alternative method such as FirstOrDefault.

See also

• Parallel LINQ (PLINQ)

Any<TSource>(ParallelQuery<TSource>, Func<TSource,Boolean>)

Source:

ParallelEnumerable.cs

Determines in parallel whether any element of a sequence satisfies a condition.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static bool Any(System::Linq::ParallelQuery<TSource> ^ source, Func<TSource, bool> ^ predicate);

public static bool Any<TSource> (this System.Linq.ParallelQuery<TSource> source, Func<TSource,bool> predicate);

static member Any : System.Linq.ParallelQuery<'Source> * Func<'Source, bool> -> bool

<Extension()>
Public Function Any(Of TSource) (source As ParallelQuery(Of TSource), predicate As Func(Of TSource, Boolean)) As Boolean

Type Parameters

TSource

The type of elements of source.

Parameters

source

ParallelQuery<TSource>

A sequence to whose elements the predicate will be applied.

predicate

Func<TSource,Boolean>

A function to test each element for a condition.

Returns

Boolean

true if any elements in the source sequence pass the test in the specified predicate; otherwise, false.

Exceptions

OperationCanceledException

The query was canceled with the token passed in through WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken).

ArgumentNullException

source or predicate is a null reference (Nothing in Visual Basic).

AggregateException

One or more exceptions occurred during the evaluation of the query.

See also

• Parallel LINQ (PLINQ)