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Excel/Exit Sub philosphy

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Question
Hello,

I have an Excel workbook with many time and VBA functions. Is it good policy that if a vba sub does not meet the basic requirements to do an "Exit Sub"?

I am concerned with all the "overhead" that is executing without cause. Is it good practice to reduce as much overhead as possible?

I am still such a novice.

Regards,
Dave

Answer
Hi Dave,

It is good practice to reduce as much overhead as possible.  But that said I would have to say that in well-written code the use of Exit Sub has very little to do with reducing overhead, and more to do with making the code clean and understandable.  The alternative to Exit Sub is usually an extra EndIf in and If..Then..Else..Endif block, but this does not incur perceptible extra overhead.  Especially if you write code that someone else may someday have to understand and/or modify I would recommend putting the effort into making the code clean and understandable.

I hope this helps.

Damon
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Damon Ostrander

Expertise

I have extensive experience with VBA programming in Excel 5 through Excel 2013. As a former aerospace engineer with a large aerospace corporation and consultant in a small defense technology services company, I have developed a wide range of applications in VBA, including simulations involving mixed-language programming, satellite orbit mechanics, graphics and animation, and real-time applications. I am interested in moderate to hard VBA-related questions only.

Experience

I have developed and taught several courses in Excel VBA programming and also VBA programming in Office 97, 2000, and 2007. I have developed a number of large technical applications in Excel VBA for use within the aerospace industry.

Education/Credentials
B.S. in Electrical Engineering and Computer Science, University of California, Berkeley.

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