You'll need to use B::Deparse for this; for instance: 

use B::Deparse;
use Data::Dumper;

my $deparse = B::Deparse->new;
print $deparse->coderef2text( sub{print 'Yeah'} )

[download]

As for Data::Dumper, the newest version (the one that came with 5.8.0; if you don't have it, get it from the CPAN) has an option called Deparse; turn it on, and it will use B::Deparse to stringify coderefs for you: 

my $test = {
  test => 1,
  code => sub { print 'Yeah'; },
  aref => [ qw(1 2 3 4 5) ],
};
$Data::Dumper::Deparse = 1;
print Dumper($test);

[download]

In reply to Re: Coderef to String conversion? by jryan
in thread Coderef to String conversion? by joe++

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.