M_CodeJam_Collections_EnumerableExtensions_IntersectBy__2

EnumerableExtensions.IntersectBy(TSource, TKey) Method (IEnumerable(TSource), IEnumerable(TSource), Func(TSource, TKey))

Produces the set intersection of two sequences by using the specified key to compare values.

Namespace: CodeJam.Collections
Assembly: CodeJam (in CodeJam.dll) Version: 1.0.0.0 (1.0.0.0)

Syntax

C#

public static IEnumerable<TSource> IntersectBy<TSource, TKey>(
	this IEnumerable<TSource> first,
	IEnumerable<TSource> second,
	Func<TSource, TKey> keySelector
)

VB

<ExtensionAttribute>
Public Shared Function IntersectBy(Of TSource, TKey) ( 
	first As IEnumerable(Of TSource),
	second As IEnumerable(Of TSource),
	keySelector As Func(Of TSource, TKey)
) As IEnumerable(Of TSource)

F#

[<ExtensionAttribute>]
static member IntersectBy : 
        first : IEnumerable<'TSource> * 
        second : IEnumerable<'TSource> * 
        keySelector : Func<'TSource, 'TKey> -> IEnumerable<'TSource> 

Parameters

 

first

Type: System.Collections.Generic.IEnumerable(TSource)
An IEnumerable(T) whose distinct elements that also appear in second will be returned.

second

Type: System.Collections.Generic.IEnumerable(TSource)
An IEnumerable(T) whose distinct elements that also appear in the first sequence will be returned.

keySelector

Type: System.Func(TSource, TKey)
A function to extract the key for each element.

Type Parameters

 

TSource

TKey

Return Value

Type: IEnumerable(TSource)
A sequence that contains the elements that form the set intersection of two sequences.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IEnumerable(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).

See Also

Reference

EnumerableExtensions Class
IntersectBy Overload
CodeJam.Collections Namespace