Imports System
Imports System.Collections.Generic
Public Class Test
Public Shared Sub Main()
Dim arr As String() = {"vb.net", "c#", "c++", "java", "php"}
Dim hash_set As HashSet(Of String) = New HashSet(Of String)(arr)
For Each item As String In hash_set
Console.Write("{0}{1}", item, " ")
Next
End Sub
End Class
' run:
'
' vb.net c# c++ java php
'