What are the -- for?

visitor83

New Member
Joined
Aug 5, 2010
Messages
14
Basic question! =)

What are the -- for in the sumproduct formulas?

I've seen it in other threads and don't know what they do!

Thanks
Vic
 

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Andrew Poulsom

MrExcel MVP
Joined
Jul 21, 2002
Messages
73,092
They coerce TRUE/FALSE into 1/0 so that they can be multiplied. You could also add zero or multiply by 1, but the double unary minus is the fashion.
 

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