NaN

Terry Reedy tjreedy at udel.edu
Thu Apr 28 23:23:07 CEST 2011


On 4/28/2011 2:59 PM, Steven D'Aprano wrote:

> Still, it could be worse... I've seen a programs use 9999 to represent
> missing values, on the basis that nobody could ever have more than (say)
> 5000 invoices in the database...
>
> (I wish I was exaggerating.)

All 9s in a field for missing was once standard for Fortran programs.

-- 
Terry Jan Reedy




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