I've already stated I think you're obviously doing something wrong if you're initializing something twice.
We're in violent agreement that you shouldn't initialize something twice; this is simply an illustrative example of what happens when you do, as is being recommended to me. It *looks* like undef or () is being assigned right away, but it's not, depending on how the module is used. The assignment at a later point is supposed to be the initial value, NOT the value on the same line. By assigning early you can cause problems, which is the point of the example above. Initializing these values that you expect to initialize later is a completely superfluous and potentially (as shown in the above example) disastrous process.

In reply to Re^5: Use of uninitialized variables? by Glav
in thread Use of uninitialized variables? by Zadeh

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.