This is an excerpt from the latest version perlfaq4.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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4.19: How do I validate input?
(contributed by brian d foy)
There are many ways to ensure that values are what you expect or want to
accept. Besides the specific examples that we cover in the perlfaq, you
can also look at the modules with "Assert" and "Validate" in their
names, along with other modules such as "Regexp::Common".
Some modules have validation for particular types of input, such as
"Business::ISBN", "Business::CreditCard", "Email::Valid", and
"Data::Validate::IP".
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