By Randal L. Schwartz, Tom Phoenix, brian d foy

If you're simply getting began with Perl, this is often the booklet you want—whether you're a programmer, process administrator, or internet hacker. Nicknamed "the Llama" through generations of clients, this bestseller heavily follows the preferred introductory Perl path taught through the authors for the reason that 1991. This sixth version covers contemporary alterations to the language as much as model 5.14.

Perl is acceptable for nearly any job on nearly any platform, from brief fixes to accomplish internet functions. studying Perl teaches you the fundamentals and indicates you the way to put in writing courses as much as 128 strains long—roughly the scale of ninety% of the Perl courses in use this day. every one bankruptcy contains workouts that can assist you perform what you've simply discovered. different books might train you to application in Perl, yet this publication will flip you right into a Perl programmer.

Topics include:

Perl info and variable types
File operations
Regular expressions
String manipulation (including Unicode)
Lists and sorting
Process management
Smart matching
Use of 3rd get together modules

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Additional info for Learning Perl (6th Edition)

Sample text

In short, Perl 6 is a completely different language now, even to the point that it’s main implementation goes by the name Rakudo. 10. Through various accidents and tangents, it turned out that as Perl 5 hotted up again, Perl 6 bogged down. Ironic, perhaps? However, Perl 5 development was also revitalized and now has monthly releases of experimental versions and roughly yearly releases of new maintenance versions. 12 came out. 16. What’s Perl Really Good For? Perl is good for quick-and-dirty programs that you whip up in three minutes.

A scalar variable holds a single scalar value, as you’d expect. Scalar variable names begin with a dollar sign, called the sigil, followed by a Perl identifier: a letter or underscore, and then possibly more letters, or digits, or underscores. Another way to think of it is that it’s made up of alphanumerics and underscores, but can’t start with a digit. Uppercase and lowercase letters are distinct: the variable $Fred is a different variable from $fred. And all of the letters, digits, and underscores are significant, so all of these refer to different variables: $name $Name $NAME $a_very_long_variable_that_ends_in_1 $a_very_long_variable_that_ends_in_2 $A_very_long_variable_that_ends_in_2 $AVeryLongVariableThatEndsIn2 Perl doesn’t restrict itself to ASCII for variable names, either.

Net/. If you find yourself needing a support contract for Perl, there are a number of firms who are willing to charge as much as you’d like. In most cases, these other support avenues will take care of you for free. org. How Can I Get Perl? | 11 What If I Find a Bug in Perl? ‖ Perl has so many special features and exceptions to rules that you may have discovered a feature, not a bug. Also, check that you don’t have an older version of Perl; maybe you found something that’s been fixed in a more recent version.

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