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#1
Posted to microsoft.public.excel.worksheet.functions
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What does -- do?
Hi, I was wondering what -- does. I'm assuming -- does not mean +. Specifically, I saw one example from Contextures with: =SUMPRODUCT(--(ColourList=B15),(UnitsList),--(DateList=$C$2),--(DateList<=$E$2)) Although I'm specifically referring to sumproduct, if it has different meanings/usage elsewhere, I'd be interested in knowing about that too. If you know of a website that explains it, that would work fine too. (-- isn't an easy thing to search for) Thanks, Scott -- Maistrye ------------------------------------------------------------------------ Maistrye's Profile: http://www.excelforum.com/member.php...o&userid=36078 View this thread: http://www.excelforum.com/showthread...hreadid=559971 |
#2
Posted to microsoft.public.excel.worksheet.functions
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What does -- do?
=sumproduct() likes to work with numbers. The -- stuff changes trues and falses
to 1's and 0's. Bob Phillips explains =sumproduct() in much more detail he http://www.xldynamic.com/source/xld.SUMPRODUCT.html And J.E. McGimpsey has some notes at: http://mcgimpsey.com/excel/formulae/doubleneg.html Maistrye wrote: Hi, I was wondering what -- does. I'm assuming -- does not mean +. Specifically, I saw one example from Contextures with: =SUMPRODUCT(--(ColourList=B15),(UnitsList),--(DateList=$C$2),--(DateList<=$E$2)) Although I'm specifically referring to sumproduct, if it has different meanings/usage elsewhere, I'd be interested in knowing about that too. If you know of a website that explains it, that would work fine too. (-- isn't an easy thing to search for) Thanks, Scott -- Maistrye ------------------------------------------------------------------------ Maistrye's Profile: http://www.excelforum.com/member.php...o&userid=36078 View this thread: http://www.excelforum.com/showthread...hreadid=559971 -- Dave Peterson |
#3
Posted to microsoft.public.excel.worksheet.functions
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What does -- do?
I've also seen folks use it to convert text date values to numeric for some
logical comparisons, like =I11<(--"4/5/06") -U.S. short date format. Note that the DATE function is probably a better choice if your workbook will be used by others. "Maistrye" wrote: Hi, I was wondering what -- does. I'm assuming -- does not mean +. Specifically, I saw one example from Contextures with: =SUMPRODUCT(--(ColourList=B15),(UnitsList),--(DateList=$C$2),--(DateList<=$E$2)) Although I'm specifically referring to sumproduct, if it has different meanings/usage elsewhere, I'd be interested in knowing about that too. If you know of a website that explains it, that would work fine too. (-- isn't an easy thing to search for) Thanks, Scott -- Maistrye ------------------------------------------------------------------------ Maistrye's Profile: http://www.excelforum.com/member.php...o&userid=36078 View this thread: http://www.excelforum.com/showthread...hreadid=559971 |
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