$ perl -MData::Dumper=Dumper -e 'open(my $fh,".bashrc") or die;
 my %h=(f => $fh);print Dumper(\%h); while(<$h{f}>){print}'

$VAR1 = {
          'f' => \*{'::$fh'}
        };
GLOB(0x800d80)

$ perl -MData::Dumper=Dumper -e 'open(my $fh,".bashrc") or die;
 my @h=($fh);print Dumper(\@h); while(<$h[0]>){print}'

$VAR1 = [
          \*{'::$fh'}
        ];
GLOB(0x800d80)