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All the Perl that's Practical to Extract and Report

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  • I would be rather perturbed to find that in production code without explicit comments that values such as

    reference to an empty hash, array, or any of the above

    for $foo and $bar are invalid and assigning over them is safe
    • Obviously, $foo is not in production code :) but the style is.
    • why?

      Why should any of those be valid apart from 0.

      If you can't see the type and usage of a variable, the solution is to name it correctly.

      It should also be clear if 0 is acceptable or not in the code, that would be the only comment possibly needed.

      @JAPH = qw(Hacker Perl Another Just);
      print reverse @JAPH;