Oddity

FWIW - I had a method that looked like this

Code:

---

    Public Sub WontCollapse(Optional para As String = "")

    End Sub

---

The important part is that it won't allow the method to collapse with one Optional argument.

Confirmed on my end, that's not only odd it does that but also odd that I haven't noticed. Typically I won't setup optional parameters though, I tend to create multiple methods with different signatures. E.g. in your situation:

Code:

---

Public Sub Foo()
    Sub("")
End Sub

Public Sub Foo(para As String)
    ' do something
End Sub

---

Same here, for the last decade plus. At some point I read that optional parameters were discouraged, though I forget why. It shouldn't be performance, as the compiler could quietly turn an optional parameter into two different methods...and that may be what it does anyways.