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I have a formula
=SUMPRODUCT(MAX(--($O$3:$O$366=O366)*$M$3:$M$366))
This works great but I do not know what the -- does?
Also is there a way to use Name Ranges instead of cell ranges
Range Name CalYr2014 is O3:O366
I have a formula
=SUMPRODUCT(MAX(--($O$3:$O$366=O366)*$M$3:$M$366))
This works great but I do not know what the -- does?
Also is there a way to use Name Ranges instead of cell ranges
Range Name CalYr2014 is O3:O366
To convert TRUE or FALSE to 1 and 0. Sumproduct can't sum a bunch of TRUE's but it can sum a bunch of 1's.
Excel recognizes that you try to perform a numerical calculation on TRUE or FALSE ( the -- operation) and converts it to 1 and 0.
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Try:
Formula:
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In this particular case -- is unnecessary because the multiplication using * implicitly converts TRUE to 1 and FALSE to zero anyway, so you only need this version
=SUMPRODUCT(MAX(($O$3:$O$366=O366)*$M$3:$M$366))
Audere est facere
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