public static IEnumerable<KeyValuePair<T, int>> RunLengthEncode<T>(
	this IEnumerable<T> sequence,
	IEqualityComparer<T> comparer
)

<ExtensionAttribute>
Public Shared Function RunLengthEncode(Of T) ( 
	sequence As IEnumerable(Of T),
	comparer As IEqualityComparer(Of T)
) As IEnumerable(Of KeyValuePair(Of T, Integer))

public:
[ExtensionAttribute]
generic<typename T>
static IEnumerable<KeyValuePair<T, int>>^ RunLengthEncode(
	IEnumerable<T>^ sequence, 
	IEqualityComparer<T>^ comparer
)

[<ExtensionAttribute>]
static member RunLengthEncode : 
        sequence : IEnumerable<'T> * 
        comparer : IEqualityComparer<'T> -> IEnumerable<KeyValuePair<'T, int>>