Bonus points for creative thinking, but would they really be useful? dollar underscore underscore reminds me of MicroSoft inventing ... and .... to directly access higher directories. I guess your next step would be $___, $____, $_____ ....

I find dollar under useful for quickies, but as soon as my program starts growing beyond a dozen lines ( which is fairly early ), I give loop variables names. It helps to know what you think you're dealing with, so that when you discover in the debugger what you actually get, you have some expectation to compare it to.

If your caller wanted you to know what args it was called with, it would have told you. But if you really find a use for that information---so you can change it when your caller isn't looking?---I suggest putting the information in caller()'s return values.

--
TTTATCGGTCGTTATATAGATGTTTGCA

In reply to Re: $_, one lexical scope removed by TomDLux
in thread $_, one lexical scope removed by sleepingsquirrel

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.