To Perl or not to Perl, that is the question... ;o)


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As a side note, when I was the lead guy during the once famous "Langley Cyber Attack", where my work in an epic "email reply spam battle" happened over two decades ago, long before spam filters became of age, we wrote all our email anti-spam filters and detection algorithms in PERL.

Edit: For anyone interested in the early days of "cyberwar" in the 1998/1997 timeframe:

E-Mail Bombs and Countermeasures: Cyber Attacks on Availability and Brand Integrity
April 1998IEEE Network 12(2):10 - 17
DOI: 10.1109/65.681925


Code:
https://www.researchgate.net/publication/3282628_E-Mail_Bombs_and_Countermeasures_Cyber_Attacks_on_Availability_and_Brand_Integrity


That PERL code "way back when" was "very crude" by todays standards, but it was very effective and fast. PERL was the best tool for that job "way back when". I was a huge PERL advocate back then, and would write all scripts in PERL, even when PERL was not needed. I loved PERL so much back then that I tried to get everyone to learn it and use it.

Sometimes old guys like me forget that the younger generations may not have had the chance to develop code in PERL and other "out of favor" programming languages these days. But when I read this discussion it brings back wonderful memories of some of the best "tech days" of my life, defending the US Air Force against hackers with PERL scripts in real-time.

wisecracker, I say "go for it" if you or anyone reading this has the time or interest to learn PERL. I would love to see a lot of people posting PERL problems here. Perhaps that would jog even more great memories from decades ago from the deep trenches of cyber warfare battles when the web was but an infant.
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Due to unfortunate history, if you use the English module but don't pass in a "-no_match_vars" argument, all regular expressions in the entire program, not merely the module in question, suffer a significant performance penalty, even if you only import a subset of the variables. use English; # not ok use English '-no_match_vars'; # ok use English qw< $ERRNO -no_match_vars >; # ok use English qw($OS_ERROR); # not ok In the last example above, while the match variables aren't loaded into your namespace, they are still created in the "English" namespace and you still pay the cost. CONFIGURATION
This Policy is not configurable except for the standard options. AUTHOR
Elliot Shank "<perl@galumph.com>" COPYRIGHT
Copyright (c) 2008-2011 Elliot Shank. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The full text of this license can be found in the LICENSE file included with this module. perl v5.16.3 2014-06-09 Perl::Critic::Policy::Modules::RequireNoMatchVarsWithUseEnglish(3)

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