2d36 Bathtub example
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Bathtub example

I wrote a few days ago about the bathtub effect. Shorten code and it becomes easier to read. Shorten it too much and it becomes silly. Here's a Perl script that I wrote to report on all lines in a log file from host computer "seal" with a status code (next to last field) over 399:

open (FH,"../access_log.xyz") or die;
while ($line = <FH>) {
   if ($line =~ /^seal\s/) {
      @parts = split(/\s+/,$line);
      if ($parts[-2] > 399) {
         print $line;
      }
   }
}

And here is a shortened application which - if you look at it byte by byte - can do the same thing!

#!/usr/bin/perl -pa
(/^seal\s/&&$F[-2]>399)or$_=""

My point? Something IN BETWEEN would be, by far, best for the typical Perl programmer to understand and maintain.
(written 2007-06-14)

 
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  [1922] Flurinci knows Raby Lae PHP and Jeve - (2008-12-04)
  [1860] Seven new intermediate Perl examples - (2008-10-30)
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  [1444] Using English can slow you right down! - (2007-11-25)
  [1289] Pure Perl - (2007-08-03)
  [1221] Bathtubs and pecking birds - (2007-06-07)
  [1136] Buffering output - why it is done and issues raised in Tcl, Perl, Python and PHP - (2007-04-06)
  [969] Perl - $_ and @_ - (2006-12-07)
  [639] Progress bars and other dynamic reports - (2006-03-09)
  [493] Running a Perl script within a PHP page - (2005-11-12)


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