Imports System
Imports System.Collections.Generic
Public Class Program
Public Shared Sub Main(ByVal args As String())
Dim _set As ISet(Of String) = New HashSet(Of String) From {
"c#",
"vb.net",
"c",
"c++",
"java"
}
Console.WriteLine(String.Join(" ", _set))
End Sub
End Class
' run:
'
' c# vb.net c c++ java
'