Imitating the “IN” Operator

I don’t think there is a very elegant solution.

However, you could try:

If Not IsError(Application.Match(x, Array("Me", "You", "Dog", "Boo"), False)) Then

or you could write your own function:

Function ISIN(x, StringSetElementsAsArray)
    ISIN = InStr(1, Join(StringSetElementsAsArray, Chr(0)), _
    x, vbTextCompare) > 0
End Function

Sub testIt()
    Dim x As String
    x = "Dog"
    MsgBox ISIN(x, Array("Me", "You", "Dog", "Boo"))
End Sub