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Home > Forums > Programmers > Languages > Perl Forum

unintialized value $_ in concatenation <.> or string

thread219-1686843
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weston2012 (Programmer)
26 Jun 12 17:34
while (my @usr = $stu->fetchrow_array)
{
foreach ( @usr ) {print STROUT $_ . "\t"}
}

I am getting a weird error msg complaining about the print statement having 'unintialized value $_ in concatenation <.> or string'

$stu->fetchrow_array returns query results, and the code tries to print the items in each row with tabs seperating them.

I am quite new to Perl, and I inherit the code from someone before me, but it really baffles me how this line would give me an error.
PaulTEG (TechnicalUser)
23 Aug 12 17:56
check if it's an uninitialised value, and if it isn't, print it ...

Paul
------------------------------------
Spend an hour a week on CPAN, helps cure all known programming ailments winky smile

Annihilannic (MIS)
28 Aug 12 20:52
Something like this perhaps:

CODE --> perl

foreach ( @usr ) {print STROUT $_ . "\t" if defined $_;}

Annihilannic
tgmlify - code syntax highlighting for your tek-tips posts

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