sub file {
    my $self = shift;
    @_ ? $self->{file} = shift 
       : $self->{file};
}

##</code><code>##

perl -e 'print "How sweet does a rose smell? "; chomp ($n = <STDIN>); $rose = "smells sweet to degree $n"; *other_name = *rose; print "$other_name\n"'