On 9/11/2010 4:27 PM, James Paige wrote:
I keep forgetting about BYREF. I know when to use it on ints, and I know
never to use it on strings, and I know it is utterly and completely
irrelvant on arrays
But what I can't remember is whether it matters for UDTs
You generally want to pass UDTs BYREF, especially if you want to modify
the UDT in the sub. You can pass them BYVAL, but:
1. They will be read only (it passes a copy)
2. If the UDT is big and passed around frequently, it will be
considerably slower than passing BYREF.
---
James
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