Perl Variables and operators

Short Description
TUTORIAL Perl. It’s possible to compare scalars in many different ways. Let’s list some of them first, and then figure out what all this. choice means. …

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Content
94 LXF69 AUGUST 2005 www.linuxformat.co.uk
TUTORIAL Perl
LESSONS IN PERL PROGRAMMING SERIES Perl Variables and operators
PART 1 Marco Fioretti explains Perl’s scripting components in, er, episode 1 of his series.
Scripting languages are popular because at the
expense of some performance, they take care of
boring jobs such as defining variables, allocating
memory, releasing it to the operating system and so on.
Invented in the late eighties, the Practical Extraction and Report
Language (Perl) was designed to manipulate huge quantities of
text, and while it may not be the most popular language in the
21st century, it remains an excellent choice for many tasks. Did
you know, for example, that Perl saved the Human Genome
Project? You can read the full story of that at http://bioperl.
org/GetStarted/tpj_ls_bio.html.
In the nineties Perl became extremely popular due to its
ability to generate dynamic web content via CGI scripts.
Nowadays PHP is probably a more popular solution in that
area, but Perl still has a lot of loyal fans and an immense base
of scripts, extensions (called modules) and documentation that
can be readily adapted to anyone’s needs.
Above all, you…