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Please note the following does not work as expected (prints nothing), 
+since overloading of '..' is not yet possible in Perl (as of v5.8.0):

        perl -Mbignum -le 'for (1..2) { print ref($_); }'

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for my $num (2..2) {
    $s = sqrt($num * 1);
    print Dumper(\$s);
}