I don't know how efficient (or not efficient) split is. I assume that since split finds the first match in the string (rather then the last) that it isn't using greedy pattern matching. If this is the case, then the matches start at the begining and iterate to the end (whereas greedy goes the other direction) and this means that stuff tacked onto the end of the string won't alter the "efficiency" of the match except in the case where no match is found. I think. I trust that some of the more experienced (and knowledgable) gurus amongst us will correct me if I'm wrong. If I'm right, then there is no efficiency loss with my method.

By the way, there is no garuntee that your not using a temporary variable will keep one from being created. Compilers are funny things that way.

In reply to Efficiancy quest by Adam
in thread always in quest to eliminate temporary variables by visnu

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.