in reply to Getting rid of an uninitialized warning

Correct me if I'm wrong, but I believe enabling can either be present with value 'on' or absent.

If so, the provided solutions are overkill and all you need is 

my $c_enabling = param('enabling')
...
if ($c_enabling)

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Re^2: Getting rid of an uninitialized warning
by jonc (Beadle) on Jun 23, 2011 at 21:08 UTC

    Ah, I see, just check if there is a value there. Genius.

    Thanks!

    Re-phrased Question: Are there any possible negative outcomes from using the methods presented by others, where the conditional statement includes "the defined -or operator"?

[reply]
      I don't understand the question.
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