Kickstart said something about s$x$y$g in the CB, and palindromes quickly became the topic (I guess my talking about y$x$y$ didn't help).

Anyway, here is my first try at a piece of code you can run through perl or tac|rev|perl... It's not symmetrical, and it does different (and rather poor) stuff each time. Call it proof of concept... and enjoy.

;;sub a;q;;;$_=a
$;=$y=x;$x=y;;;;
y$x,$y$;qq tnirp
;,mit;print,q;}{
_ bus;;sub a{$_[
0].$/}s q;/q\/q;

[download]

P.S.: This seems to have B::Deparse enter an infinite loop if you try to deparse the script.

In reply to tac|rev|perl by BooK

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.