Perl

FAQ 4.50 How do I select a random element from an array?
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 . --------... 18 Feb 2007 15:33

Why isn't variable maintained between subroutines in .pm module?
According to the docs, if you define a variable using the "use vars" pragma in a perl module, then that variable should be available across the entire .pm module. Listed below I have an excerpt from a module named test.pm. The $host variable is defined with the "usr vars" pragma, but I can't access it from the... 19 Feb 2007 05:04

Passing parameters from one Perl script to another
I apologize in advance for asking what probably has a simple answer that I can't seem to find. Can I pass parameters from one Perl script to another Perl script without using cookies? Is there a method similar to using hidden form elements to submit parameters from an HTML page to a Perl script? -- Ed Jay (rem... 26 Feb 2007 14:59

FAQ 4.75 How do I verify a credit card checksum?
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 . --------... 18 Feb 2007 09:49

serialize array of references from $sth->fetchall_arrayref
hello, I want to serialize and save on disk data structures from database query. The object are array of references to array so that $object->[i]->[j] is the inner element 1) how can I serialize and un-serialize? 2) is it possible to save it encrypted on disk? Thanks, Filippo ... 19 Feb 2007 08:53

FAQ 4.36 How can I expand variables in text strings?
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 . --------... 18 Feb 2007 03:21

FAQ 4.60 How can I always keep my hash sorted?
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 . --------... 17 Feb 2007 21:39

FAQ 5.21 I still don't get locking. I just want to increment the number in the file. How can I do this?
This is an excerpt from the latest version perlfaq5.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 . --------... 17 Feb 2007 15:24

FAQ 4.39 What is the difference between a list and an array?
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 . --------... 17 Feb 2007 09:40

test - disregard
asdfasdf ... 17 Feb 2007 11:14