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RE: comparing a part of the XML tree

Subject: RE: comparing a part of the XML tree
From: Owen Rees <owen.rees@xxxxxx>
Date: Sun, 15 Jul 2007 22:01:18 +0100
RE:  comparing a part of the XML tree
--On 15 July 2007 18:15 +0100 Michael Kay wrote:

Calling deep-equal on every element would do the trick. It could
potentially be quite expensive, but with luck deep-equal doesn't take
very long when the arguments are obviously not equal, for example when
they are elements with different names.

For the example given, deep-equal would not find any pair of items that match. The 'selection' element has two children but does not itself appear in the 'original' so there is no item in the selection that can be deep-equal to any item in the 'original'.


The first child of 'selection' does seem to be deep-equal to an item in 'original' but the 'selection' item's following sibling - a text node - is not equal to the following sibling of the item in the 'original'. If spaces were to be normalised then the content of the 'selection' text node would be a prefix of the content of the 'original' text node.

--
Owen Rees
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