XML::LibXML::XPathExpression - Online Linux Manual PageSection : 3pm
Updated : 2020-11-08
Source : perl v5.32.0
Note : User Contributed Perl Documentation

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NAMEXML::LibXML::XPathExpression − XML::LibXML::XPathExpression − interface to libxml2 pre−compiled XPath expressions

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SYNOPSIS​ use XML::LibXML; ​ my $compiled_xpath = XML::LibXML::XPathExpression−>new('//foo[@bar="baz"][position()<4]'); ​ ​ # interface from XML::LibXML::Node ​ ​ my $result = $node−>find($compiled_xpath); ​ my @nodes = $node−>findnodes($compiled_xpath); ​ my $value = $node−>findvalue($compiled_xpath); ​ ​ # interface from XML::LibXML::XPathContext ​ ​ my $result = $xpc−>find($compiled_xpath,$node); ​ my @nodes = $xpc−>findnodes($compiled_xpath,$node); ​ my $value = $xpc−>findvalue($compiled_xpath,$node); ​ ​ $compiled = XML::LibXML::XPathExpression−>new( xpath_string );

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DESCRIPTIONThis is a perl interface to libxml2's pre-compiled XPath expressions. Pre-compiling an XPath expression can give in some performance benefit if the same XPath query is evaluated many times. XML::LibXML::XPathExpression objects can be passed to all find... functions XML::LibXML that expect an XPath expression. new() ​ $compiled = XML::LibXML::XPathExpression−>new( xpath_string ); The constructor takes an XPath 1.0 expression as a string and returns an object representing the pre-compiled expressions (the actual data structure is internal to libxml2).

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AUTHORSMatt Sergeant, Christian Glahn, Petr Pajas

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VERSION2.0134

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COPYRIGHT2001−2007, AxKit.com Ltd. 2002−2006, Christian Glahn. 2006−2009, Petr Pajas.

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LICENSEThis program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. 0

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Johanes Gumabo

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