I'd be very wary about doing this completely automatically. There's nothing stopping someone from calling an arbitrary method $somePkg->$someMethod( "blah" ), with either of those variables set at runtime. You'll need to be looking very closely at all of the code, otherwise can't be sure that there's not some code path that's setting $somePkg to something you've removed since you never saw it called.

Update: And a similar caveat for plain subroutine calls if there isn't a use strict; there could be &{"${somePkg}::$sub"}() calls to who knows what. Granted this probably unlikely (I wouldn't write code that way), but be aware of the possibility.

Update: You should probably get your boss to spring for a copy of Refactoring (ISBN 0201485672) as well.

In reply to Re: How do I detect what modules are not being used? by Fletch
in thread How do I detect what modules are not being used? by FatDog

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.