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From: PerlFAQ Server on 13 Jun 2010 12:00
This is an excerpt from the latest version perlfaq7.pod, which
comes with the standard Perl distribution. These postings aim to
reduce the number of repeated questions as well as allow the community
to review and update the answers. The latest version of the complete
perlfaq is at http://faq.perl.org .

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7.25: Why can't a method included in this same file be found?

Some possible reasons: your inheritance is getting confused, you've
misspelled the method name, or the object is of the wrong type. Check
out perltoot for details about any of the above cases. You may also use
"print ref($object)" to find out the class $object was blessed into.

Another possible reason for problems is because you've used the indirect
object syntax (eg, "find Guru "Samy"") on a class name before Perl has
seen that such a package exists. It's wisest to make sure your packages
are all defined before you start using them, which will be taken care of
if you use the "use" statement instead of "require". If not, make sure
to use arrow notation (eg., "Guru->find("Samy")") instead. Object
notation is explained in perlobj.

Make sure to read about creating modules in perlmod and the perils of
indirect objects in "Method Invocation" in perlobj.



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The perlfaq-workers, a group of volunteers, maintain the perlfaq. They
are not necessarily experts in every domain where Perl might show up,
so please include as much information as possible and relevant in any
corrections. The perlfaq-workers also don't have access to every
operating system or platform, so please include relevant details for
corrections to examples that do not work on particular platforms.
Working code is greatly appreciated.

If you'd like to help maintain the perlfaq, see the details in
perlfaq.pod.
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