And here's why this is the best choice at the time I wrote it: require is faster than eval STR. In addition, Win32::DriveInfo (according to its documentation) doesn't export anything anyway.

Personally, I use require over use more that most people here, it seems - but fully qualified names don't bother me as they do some.

Alternately, you could just always load Win32::DriveInfo: 

my $hasdriveinfo = eval { require Win32::DriveInfo; 1 };

[download]
This will fail gracefully on Unix, but load the module on Windows. The only downside is if Win32::DriveInfo isn't installed on Windows, and you absolutely must use it on Windows. Then you'll need to check: 
if ($^O eq 'MSWin32' and not $hasdriveinfo)
{
  die "failed to load Win32::DriveInfo - is it installed? $@";
}

[download]
At this point, jbrugger's answer is way simpler, if you do really need it.

In reply to Re^2: Conditionally including modules by Tanktalus
in thread Conditionally including modules by Bolan

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.