Calculations


\"PerlThis 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 part one for introduction of the series.

Famous Perl one-liners is my attempt to create “perl1line.txt” that is similar to “awk1line.txt” and “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:

  • Part I: File spacing.
  • 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! 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 Perl special variable cheat-sheet. Even tho it’s mostly copied out of perldoc perlvar, it’s still handy to have in front of you, so print it.

Read more…………

URL: http://feedproxy.google.com/~r/catonmat/~3/KqbejYcmAtQ/
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