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Re: checking $optionby Anonymous Monk |
| on Jun 26, 2009 at 05:03 UTC ( [id://774914]=note: print w/replies, xml ) | Need Help?? |
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perldoc -f defined
Ieturns a Boolean value telling whether EXPR has a value other than the undefined value undef. If EXPR is not present, $_ will be checked.
In Section
Seekers of Perl Wisdom
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