Calculations

2009-11-17 219 words 2 mins read

<img src="http://blog.amit-agarwal.co.in/wp-content/uploads/2010/08/perl-one-liners.jpg" alt="Perl One Liners" align="bottom" />This is the third part of a seven-part article on famous Perl one-liners. In this part I will create various one-liners for calculations. See <a href="http://www.catonmat.net/blog/perl-one-liners-explained-part-one/">part one for introduction of the series.

Famous Perl one-liners is my attempt to create “perl1line.txt” that is similar to “<a href="http://www.catonmat.net/blog/awk-one-liners-explained-part-one/">awk1line.txt” and “<a href="http://www.catonmat.net/blog/sed-one-liners-explained-part-one/">sed1line.txt” that have been so popular among Awk and Sed programmers.

The article on famous Perl one-liners will consist of at least seven parts:

  • <a href="http://www.catonmat.net/blog/perl-one-liners-explained-part-one/">Part I: File spacing.
  • <a href="http://www.catonmat.net/blog/perl-one-liners-explained-part-two/">Part II: Line numbering.
  • Part III: Calculations (this part).
  • Part IV: String creation. Array creation.
  • Part V: Text conversion and substitution.
  • Part VI: Selective printing and deleting of certain lines.
  • Part VII: Release of perl1line.txt.

After I’m done explaining all these one-liners, I’ll publish an ebook. Everyone who’s subscribed to my blog will get a free copy! <a href="http://www.catonmat.net/feed/">Subscribe now!

The one-liners will make heavy use of Perl special variables. A few years ago I compiled all the Perl special variables in a single file and called it <a href="http://www.catonmat.net/blog/perls-special-variable-cheat-sheet/">Perl special variable cheat-sheet. Even tho it’s mostly copied out of <a href="http://perldoc.perl.org/perlvar.html">perldoc perlvar, it’s still handy to have in front of you, so print it.

Read more…………

URL: <a href=\"http://feedproxy.google.com/~r/catonmat/~3/KqbejYcmAtQ/\">http://feedproxy.google.com/~r/catonmat/~3/KqbejYcmAtQ/</a>
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Authored By Amit Agarwal

Amit Agarwal, Linux and Photography are my hobbies.Creative Commons Attribution 4.0 International License.

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