I'm attempting to use case folding, when available, as the "more correct" version of case-insensitive string comparisons. However, it's only available for versions of Perl from v5.16 onwards, and I'd like to maintain backward compatibility (back to v5.8.8). So, I have a small section of version dependent code. My current solution uses stringy eval to protect it from compilation error in earlier Perl versions: 
use strict;
use warnings;
use utf8;
use 5.008008;   # minimum perl version ## v5.8.8 ~ required for decent
+ basic Unicode support

my @list = qw/ Foo bAR baZ /;

if ( $] ge '5.016' ) {
    ## no critic ( ProhibitStringyEval RequireCheckingReturnValueOfEva
+l )
    eval q/@list = sort { ( CORE::fc $a ) cmp ( CORE::fc $b ) } @list;
+/
    }
else { @list = sort { ( lc $a ) cmp ( lc $b ) } @list; }

print qq/[ @list ]/,"\n";

[download]

It works but seems a bit crufty to me. I'd love to hear opinions or about any alternative formulations.

Thanks.

In reply to Perl version dependent code by Wyrdweaver

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.