Dear Monks,

Working my way through some spreadsheet-like calculations with the use of Data::Table I have a problem with "empty cells". It's best described with the sample below. I did put an empty value in the 3 row of the 2nd column. In the extra created 3rd column I'm creating a row-total. If I run the code I get

Argument "" isn't numeric in addition (+) at...

I understand that, as there is no value in the 3 row of the second column.

Is there a way (except for leaving out use strict, warnings) to work around this? Or how can I make it numeric?
Thanks,
Gert 
#!/usr/bin/perl -w
use strict;
use diagnostics;
use Data::Table;

my $t = new Data::Table( [ [ 1, 2, 3 ], [ 10, 20, " " ] ], [ 'A', 'B' 
+], 1 );

# create emtpy column
my @newCol = ();
$newCol[ $t->nofRow - 1 ] = undef;
$t->addCol( \@newCol, 'adding_up' );

# Put the formula in the empty column
$t->colsMap( sub { $_->[2] = $_->[0] + $_->[1] } );
print $t->csv;
exit;

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In reply to Data::Table - empty values - avoid warnings by GertMT

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