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Idea collection
* XPath localization paths
- [ ] ancestor
- http://doc.ddart.net/xmlsdk/htm/xpath_syntax2_3prn.htm
- examples:
* Find the nearest book ancestor of the current element:
ancestor::book[1]
* Find the nearest ancestor book that has an author element:
ancestor::book[author][1]
* Find the nearest ancestor author element that is contained
in a book element:
ancestor::author[parent::book][1]
- [ ] preceding-sibling
- [ ] preceding
- might not work well with hashes
- still useful, as data could be tied to Tie::IxHash?
- else ignore the wrong order, it's the user's responsibility
to (not) use it this way, as it is the same with ordinary
perl % and @
* Functions for node collections
- [ ] position()
- [ ] last()
- [ ] count()
- [ ] id()
- [ ]
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