"This is happening because wherever you have a conditional based on a variable that may not contain a value"

Nope. Perl forgives you if you simply test or assign a bare uninitialized variable in a conditional. Your code works for this reason -- no warning for "if ($var)". Going over your post, I think this is a case where you understand but just mis-stated your assertion.

Note:

#!/usr/bin/perl -w use strict; my $stuff; # No complaint here if ($stuff) { print "hello\n"; } # No complaint here if (my $stuff2 = $stuff) { print "hello\n"; } # But this interpolation causes a warning if (my $stuff3 = "$stuff") { print "hello\n"; } # This concatenation complains also if (my $newstuff = "new $stuff") { print "hello\n"; }

------------------------------------------------------------
"Perl is a mess and that's good because the
problem space is also a mess.
" - Larry Wall


In reply to Re: Re: Use of uninitialized value errors by dvergin
in thread Use of uninitialized value errors by aseidas

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.