push(@$outputRef, "$symbol,$side,$account,$shares");

##</code><code>##

push(@$outputRef, [ $symbol,$side,$account,$shares ]);

##</code><code>##

push(@$outputRef, {
    symbol => $symbol,
    side => $side,
    account => $account,
    shares => $shares,
});

##</code><code>##

my @sorted = sort{
    $a->[1] cmp $b->[1] || $a->[0] cmp $b->[0] || $a->[2] cmp $b->[2]
} map { [split(',', $_)] } @$outputref;