public static HashSet<TSource> ToHashSet<TSource>(
	this IEnumerable<TSource> source,
	IEqualityComparer<TSource> comparer
)

<ExtensionAttribute>
Public Shared Function ToHashSet(Of TSource) ( 
	source As IEnumerable(Of TSource),
	comparer As IEqualityComparer(Of TSource)
) As HashSet(Of TSource)

public:
[ExtensionAttribute]
generic<typename TSource>
static HashSet<TSource>^ ToHashSet(
	IEnumerable<TSource>^ source, 
	IEqualityComparer<TSource>^ comparer
)

[<ExtensionAttribute>]
static member ToHashSet : 
        source : IEnumerable<'TSource> * 
        comparer : IEqualityComparer<'TSource> -> HashSet<'TSource>