my @accounts = [ 
    [ current => 1000 ],
    [ savings => 2000 ],
    [ other   => 500  ],
];
display_2d(\@accounts);

# Should display:
current  |  1000
savings  |  2000
other    |  500

##</code><code>##

my $width_col = 8;
say join ' | ',
    map {
        # Give each column the same size
        length($_) >= $width_col ? 
            $_ : $_ . " "x($width_col-length($_))  # add spaces
    } @$_
    for @rows;