XML::LibXML count nodes


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by elgato (Novice)

on Nov 17, 2011 at 15:23 UTC ( [id://938632]=perlquestion: print w/replies, xml )

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elgato has asked for the wisdom of the Perl Monks concerning the following question:

Hi. It there any good way to get number of found nodes on xpath query? Smth like this:

my $doc = $parser->parse_file($file);
print length(@{$doc->findnodes('//category')})
[download]

I just need nodes count without making foreach counter (have many rows). Thanks in advance.

Comment on XML::LibXML count nodes Download Code

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Re: XML::LibXML count nodes by choroba (Cardinal) on Nov 18, 2011 at 08:44 UTC
Use XPath function `count`: `my $count = $doc->findvalue("count(//category)");` [download]	[reply] [d/l] [select]
Re: XML::LibXML count nodes by Anonymous Monk on Nov 17, 2011 at 15:27 UTC
What does findnodes return? Where is findnodes documented? Oh look, XML::LibXML::Node#findnodes -> XML::LibXML::NodeList#size	[reply]
Re^2: XML::LibXML count nodes by elgato (Novice) on Nov 17, 2011 at 15:43 UTC
Seems like what i've needed! Thanks! PS: LibXML docs suck =\	[reply]
Re: XML::LibXML count nodes by Lotus1 (Vicar) on Nov 17, 2011 at 19:10 UTC
Try this: `print scalar(@{$doc->findnodes('//category')});` I've done it by assigning the nodes to an array and then just printing the number of elements in the array.	[reply] [d/l]

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