vba courses london - setting all variables zero
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vba courses london - Setting all variables to zero

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Setting all variables to zero

Peter has attended:
Excel VBA course

by - delegate Peter [2 posts] (2007 Jan 12 Fri, 16:13) replyReply

We were shown how to set individual variables to zero (or empty them in the case of string varibles), but is there any one line piece of code to set all variables to zero or remove all variables in memory.

Thanks

RE: setting all variables to zero

by - trainer David gold contributer[428 posts] (2007 Jan 15 Mon, 12:58) replyReply

Hi Peter

If you mean you want to initialise all variables to zero when you create them, you can create one main variable and set it to zero, then for all the other variables you create you can reference the original variable, thus they will be initialised to the value held within the original variable.

In regards to removing all variables in memory you want to use a process called garbage collection. I am not familiar with the code for this in VBA, but in asp.net the command is GC.Cellect(). I will look into this in greater depth and get back to you.

Hope this helps

David


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Vba tip:

Use VbNullString instead of

When needing to default a String variable back to it's default of "" use vbNullString as in the following example:

Sub ClearText()

Dim strEmpName As String

strEmpName = "John Smith"
MsgBox strEmpName

strEmpName = vbNullString
MsgBox strEmpName

End Sub

View all VBA hints and tips

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