Monks, I was just trying to install CPANPLUS on my hosted shell account, and it errored out because on my particular Linux build, use constant a => sub {}; has problems.

I've never seen this idiom before, and not that much experience on unix. Should I be worried? Is this an important feature of perl, and/or an issue that will likely cause further annoynance, beyond just not being able to install cpanplus? Or is it no big deal?

Thanks for shedding light!

(See Can/should I run an upgraded version of perl locally, on a shared web server where I don't have root? for original question and Re^2: Can/should I run an upgraded version of perl locally, on a shared web server where I don't have root? for where I noted that the problem was perl 5.8 on my particular linux version, not that perl 5.8 was too early a version as I originally mistakenly thought. The second link also quotes from the part of the makefile that was causing problems when I tried to install.)


In reply to How important is 'use constant a => sub {};' by tphyahoo

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.