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12-05-2025, 01:55 AM
(This post was last modified: 12-05-2025, 01:57 AM by PhilOfPerth.)
Is it "kosher" to exit a sub while inside a loop in the sub, or does it create problems (e.g. stack corruption etc.)?
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It's fine. The loop should be in the sub's scope. When you exit the sub everything is cleared except for static variables. If you do it with a function make sure you set the return value first.
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Caveat: If you have settings to restore, handles to free, mem to deallocate, you may just want to GOTO the cleanup portion of your sub and exit normally, rather than breakout with an EXIT SUB and skip all that.
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It won't cause a stack space issue if FOR/NEXT or DO/LOOP WHILE/WEND. Stack issue are a result of doing a gosub without a return. GOTO statements within the gosub routine are the usual culprits, and its just bad coding practice to say the least.
I try to limit using EXIT SUB. Granted I need one when the bottom of a subroutine has one or more gosub routines in it.We have to exit before the program flow hits the gosub routine on its way to the end sub statement.
A way to accomplish the same thing as EXIT SUB is a double loop.
Sub Steve
While -1
Do
If Pete = Tremendous Then Exit While
Loop
Rem Blah, blah, blah...
Wend
End Sub
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