#! /usr/bin/perl

use strict;
use warnings;
use B::Deparse; 

sub str_code {
    my $coderef = shift;
    return "sub " . B::Deparse->new("-sC")->coderef2text( $coderef );
}

my $coderef = sub { print "Hello world\n" };

print "We have a coderef $coderef\n";

print "Which we can run like this: ";
$coderef->();

my $deparsed_coderef = str_code( $coderef );
print "Which we can deparse to this: $deparsed_coderef\n";

my $new_coderef = eval $deparsed_coderef;
print "Which we can eval to another coderef $coderef\n";

print "Which we can run just like the original: ";
$new_coderef->();

__END__
# produces
We have a coderef CODE(0x361a98)
Which we can run like this: Hello world
Which we can deparse to this: sub {
    use warnings;
    use strict 'refs';
    print "Hello world\n";
}
Which we can eval to another coderef CODE(0x361a98)
Which we can run just like the original: Hello world