Actually, if you used kcott's suggestion here and split into a named array, e.g.
    my @fields = map { ... } split ..., $str;
you wouldn't have to worry about how many pipes there are and 'uninitialized' variables: you get what you get, it's all defined, and it's easy to test how much you've gotten by taking the size of the array and to iterate over the array. Rather than writing  $varn you write  $fields[n] instead, but 0-based.
But I assume you have your reasons for preferring individual named variables...

In reply to Re^3: How to clean an array of strings after a split by AnomalousMonk
in thread How to clean an array of strings after a split by MrSnrub

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.