http://www.perlmonks.org?node_id=911159


in reply to Getting rid of an uninitialized warning

Replace 
my $c_enabling = param('enabling');

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with 
my $c_enabling = param('enabling') || '';

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If $c_enabling can never have '0' as a valid input;

otherwise 

my $c_enabling = param('enabling');
$c_enabling = '' unless defined $c_enabling;

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Re^2: Getting rid of an uninitialized warning
by jonc (Beadle) on Jun 23, 2011 at 21:06 UTC

    Thanks a lot, that was the problem, it was aloud to have a 0 input, but I didn't know how to check that easily. I had tried the defined check, but it didn't work. I really hope this can't backfire, since I just put it everywhere...

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