<ExtensionAttribute()>
Public Shared Function Intersect
    (Of TSource,TResult)( _
   ByVal first As IEnumerable(Of TSource), _
   ByVal second As IEnumerable(Of TSource), _
   ByVal selector As Func(Of TSource,TResult) _
) As IEnumerable(Of TSource)

Dim first As IEnumerable(Of TSource)
Dim second As IEnumerable(Of TSource)
Dim selector As Func(Of TSource,TResult)
Dim value As IEnumerable(Of TSource)
 
value = EnumerableFns.Intersect(Of TSource, TResult)(first, second, selector)

[ExtensionAttribute()]
public static IEnumerable<TSource> Intersect<TSource,TResult>( 
   IEnumerable<TSource> first,
   IEnumerable<TSource> second,
   Func<TSource,TResult> selector
)

[ExtensionAttribute()]
public:
static IEnumerable<TSource^>^ Intersectgeneric<typename TSource>
generic<typename TResult>
( 
   IEnumerable<TSource^>^ first,
   IEnumerable<TSource^>^ second,
   Func<TSource^,TResult^>^ selector
)