This script nicely demonstrates a bad use of map - if you are discarding the output of map then you should use for/foreach.

You can tidy the ternary operator up too. I'd write something like (untested but optimised for brevity :-) 

  $extension{index} = 'pod';
  system "pod2html $_." . ($extension{$_} || 'pm') . " > $_.html"
      for (qw(HostCycle Instinet index));

[download]
For real I'd put an or die after the system though ;-)

Update: I did test it, and I got this result 

$ perl -
[fx: cuts and pastes the code above]
Can't open HostCycle.pm: No such file or directory
Can't open Instinet.pm: No such file or directory
Can't open index.pod: No such file or directory
It works! (The error messages are from pod2html.)

In reply to Re: Conditional, Ternary Operator - Specifying default and non-default values by ncw
in thread ((Conditional, Ternary Operator)) Specifying default and non-default values by princepawn

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.