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what are volatile functions

  1. 09-04-2015, 02:59 PM #1
    ammartino44
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    what are volatile functions

    What are volatile functions and why would I want to activate them in the code below? 

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  2. 09-04-2015, 03:57 PM #2
    shg
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    Re: what are volatile functions

    That function is passed everything it needs to calculate a result, so there is no need to make it volatile, and doing so will just slow the workbook down.
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  3. 09-04-2015, 05:21 PM #3
    MrShorty
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    Re: what are volatile functions

    You might find this interesting: http://www.decisionmodels.com/calcsecretsi.htm

    IMO, making a UDF volatile is a "band-aid" covering the programmer who did not want to code the UDF correctly. As shg points out, this UDF seems well coded and does not need to be volatile.
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  4. 09-05-2015, 04:03 AM #4
    tim201110
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    Re: what are volatile functions

    1 sum(--(match(A1:A15,A1:A15,)=row(A1:A15))) as CSE returns the same
    2 the code is not so good. it would be much better at first do: range=array
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