#!perl

use strict;
use warnings;
use XML::Simple qw/XMLin/;
use Data::Dumper qw/Dumper/;

my $string = qq~
<root>
        <row no="0">
                <col no="0">0.0</col>
        </row>
        <row no="1">
                <col no="0">1.0</col>
        </row>
</root>
~;
my $ref = XMLin($string);
print Dumper($ref);

$VAR1 = [
          [
            '0.0'
          ],
          [
            '1.0'
          ]
        ];