No, it is used to coerce True/False arrays to 1/0 arrays. SP is generally
used to test multiple conditions, and these tests return an array of TRUE or
FALSE. This is of no use to get a count, so that needs to be changed to
arrays of 1 and 0, which is what the double unary does.

--
HTH

Bob Phillips

(replace somewhere in email address with gmail if mailing direct)

"Marcelo" wrote in message
...
to sum text

regards

"WBTKbeezy" escreveu:

Hi, can anyone inform me the reason for using the "--" in formulas
(especially the sumproduct function)

Someone referred me to this link but I cannot decipher HOW the formula
works.

http://www.nwexcelsolutions.com/adva...ction_page.htm
(Question 1)

Thanks