Actually that code doesn't compile, but if you want to know about subroutine references and the use thereof see Re (tilly) 1: References quick reference. Here's some example code for anonymous sub usage e.g 
my $anonsub = sub { print "anonymous sub(@_)\n" };

$anonsub->("deref operator");
&$anonsub("sigil deref");

__output__

anonymous sub(deref operator)
anonymous sub(sigil deref)

[download]
See. perlsub for more info.
HTH

_________
broquaint

In reply to Re: Using references to subroutines by broquaint
in thread Using references to subroutines by firedoctor

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