It says here ([Perl.sig] Perl Tip of the Week, March 2005) that:
Unfortunately, it's not possible to dump a subroutine reference using ''Data::Dumper'' or other tools. Perl doesn't (yet) have a way of turning a subroutine back into code. If we do pass a subroutine reference to Data::Dumper, it will instead print a place holder: 
use Data::Dumper;
print Dumper $sub_ref; # prints $VAR1 = sub { "DUMMY" };

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This is easily confirmed on the command line: 
$ perl
use strict;
use warnings;
use Data::Dumper;
my $coderef = sub { print "hello world\n"; };
print Dumper($coderef);
__END__
$VAR1 = sub { "DUMMY" };

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Have this evolved since March 2005? Are there ways to turn a reference to a subroutine back into code?

Update Fri Apr 18 09:50:54 CEST 2008: Thank you Monk with no name: 

$ perl
use strict;
use warnings;
use Data::Dumper;
my $coderef = sub { print "hello world\n"; };
$Data::Dumper::Deparse=1;
print Dumper($coderef);
__END__
$VAR1 = sub {
            use warnings;
            use strict 'refs';
            print "hello world\n";
        };

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--
When you earnestly believe you can compensate for a lack of skill by doubling your efforts, there's no end to what you can't do. [1]

In reply to Turning a reference to a subroutine back into code by andreas1234567

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