The question cropped up on a mailing list, which struck me as being an interesting one to repost here.
As part of a script the person in question is trying to do something along the lines of
$a= 10; $b= 20; $operator= ">=" if ( $a $operator $b ) { ... }
operator, a and b are parameters read from a file.
Perl doesn't like that syntax (well, the obvious immediate reason is that 'operator' is a string rather than an actual operator but you see what I'm trying to accomplish). Now whilst it's possible to do a 'case' style statement, it struck me that that's far from an elegant way of doing things. Can someone suggest a proper perlish way of accomplishing this?
Cheers.
--
It's not pessimism if there is a worse option, it's not paranoia when they are and it's not cynicism when you're right.

In reply to Dynamic operators by Preceptor

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.