Perl√Ęs Camel and Special Variables Trying to eat him

In my previous post - downloading youtube videos with a Perl one-liner - I used Perl's special variable $_. This is just one of many Perl's special variables.

One day last year I decided to go through all the Perl's special variables carefully so I could become a better Perl programmer and make a cheat sheet which I could always keep on my desk and look things up when needed.

As I explained in the previous cheat-sheet post (awk's cheat sheet), the cheat sheets are for learning things better and not doing things blindly and looking the stuff each time up. Here is another example why cheat sheets are helpful - suppose you programmed for 5 hours and then sat back in your chair to relax for 10 minutes. You could relax by taking cheat sheet in your hands and just scan through it and remember a thing or two.

This cheat sheet contains all the perl's special variables, their description and examples where possible.

It can be nicely printed on one sheet of paper by having two pages per side. Two on one side and two on other. That's how I have printed it.

Available as usual in .doc and .pdf formats.

Download Perl's Special Variable Cheat-Sheet

PDF:
Download link: perl's special variable cheat sheet (.pdf)
Downloaded: 112456 times

Microsoft Word 2000 format (.doc):
Download link: perl's special variable cheat sheet (.doc)
Downloaded: 6274 times

Are you interested in Perl programming language? Here are three excellent books on Perl from Amazon (recommended by me):

Comments

March 29, 2009, 07:19

Cheat sheets are great for software developers of all skill level. I use them often myself, mostly for syntax checking.

There is a link above to Perl Best Practices. I have no affiliation to this site or that book, but the information in Best Practice is second only to the Perl Cookbook.

My 2cents

kangu Permalink
November 23, 2009, 12:54

Thanks pkrumins it helps a lot.

January 22, 2015, 17:43

Great information. thanks for sharing this

Jacobes Permalink
February 17, 2015, 06:58

With the more advance and easy coding options Perl is becoming one of the most favorite options for the programmers. Debugging is also quiet easy in such language. Like a site provide complete information about two wheeler suit. It provide a space where you can easily understand the functions.

February 19, 2015, 06:18

Hi, I think u have posted the best article according to information. keep it up I will be glad to see such informative and helping article from u. very useful information.. thanks for sharing

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