This is one of the example sorts in Uri Guttman and Larry Rosler's paper on sorting in Perl.

They use the following:

@out = sort {
    pack('C4' => $a =~
      /(\d+)\.(\d+)\.(\d+)\.(\d+)/)

    cmp

    pack('C4' => $b =~
      /(\d+)\.(\d+)\.(\d+)\.(\d+)/)
  } @in;

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<http://dave.org.uk>

"The first rule of Perl club is you do not talk about Perl club." -- Chip Salzenberg

In reply to Re: How to sort IP addresses by davorg
in thread How to sort IP addresses by Anonymous Monk

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