Union(TSource) Method (ParallelQuery(TSource), ParallelQuery(TSource), IEqualityComparer(TSource))

Task Parallel System.Threading

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Produces the set union of two parallel sequences by using a specified IEqualityComparer{T}.

Namespace:  System.Linq
Assembly:  System.Threading (in System.Threading.dll)

Syntax

Visual Basic (Declaration)
Public Shared Function Union(Of TSource) ( _
	first As ParallelQuery(Of TSource), _
	second As ParallelQuery(Of TSource), _
	comparer As IEqualityComparer(Of TSource) _
) As ParallelQuery(Of TSource)
C#
public static ParallelQuery<TSource> Union<TSource>(
	ParallelQuery<TSource> first,
	ParallelQuery<TSource> second,
	IEqualityComparer<TSource> comparer
)

Parameters

first
Type: System.Linq..::.ParallelQuery<(Of <(TSource>)>)
A sequence whose distinct elements form the first set for the union.
second
Type: System.Linq..::.ParallelQuery<(Of <(TSource>)>)
A sequence whose distinct elements form the second set for the union.
comparer
Type: System.Collections.Generic..::.IEqualityComparer<(Of <(TSource>)>)
An IEqualityComparer<(Of <(T>)>) to compare values.

Type Parameters

TSource
The type of the elements of the input sequences.

Return Value

A sequence that contains the elements from both input sequences, excluding duplicates.

Exceptions

ExceptionCondition
System..::.ArgumentNullException first or second is a null reference (Nothing in Visual Basic).

See Also

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