in reply to XML::twig counting elements that don't have a certain attribute/value on them

Try this: 
use strict;
use warnings;
use XML::Twig;

my $xmlStr = <<XML;
<foo>
    <qp>
        <q supp="yes">hello</q>
        <q supp="no">bye</q>
        <xr supp="yes">later</xr>
    </qp>
</foo>
XML

my $twig= XML::Twig->new();
$twig->parse($xmlStr);
my $elt = $twig->root();
my @qps = $elt->children('qp');
my $numOfQuotes = 0;
for my $qp (@qps) {
    for my $q ($qp->children( qr/^(q|xr)$/ )) {
        $numOfQuotes++ if $q->att('supp') eq 'yes';
    }
}
print "numOfQuotes = $numOfQuotes\n";

__END__

numOfQuotes = 2

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Re^2: XML::twig counting elements that don't have a certain attribute/value on them
by mertserger (Curate) on Mar 05, 2010 at 15:47 UTC

    Toolic

    I have modified your suggestion (I needed the ones that weren't suppressed) as this seemed to cope with the added requirements for testing for other attributes and values. Thansk for this suggestion

    My code is something like this:

    my $numOfQuots = 0;
        if ( my @qps = $elt->children('qp') ) {
            foreach my $qp (@qps) {
                foreach my $q ($qp->children( qr/^(q|xr)$/ ) ) {
                $numOfQuots++ if (($q->att('supp') ne 'yes') 
                && ($q->att('info') ne 'yes') &&
                ($q->att('info') ne 'info') &&
                ($q->att('info') ne 'intro') &&
                ($q->att('style') ne 'IMPL'));
                }
            }
        }

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