XML::LibXML::XPathExpression - XML::LibXML::XPathExpression - interface to libxml2 pre-compiled XPath expressions
use XML::LibXML; my $compiled_xpath = new XML::LibXML::XPathExpression('//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 );
This 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.
XML::LibXML::XPathExpression
find...
XML::LibXML
$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).
Matt Sergeant, Christian Glahn, Petr Pajas
1.66
2001-2007, AxKit.com Ltd; 2002-2006 Christian Glahn; 2006-2008 Petr Pajas, All rights reserved.
To install XML::LibXML, copy and paste the appropriate command in to your terminal.
cpanm
cpanm XML::LibXML
CPAN shell
perl -MCPAN -e shell install XML::LibXML
For more information on module installation, please visit the detailed CPAN module installation guide.