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RE : Re: Merging attributes in one XML file with

Subject: RE : Re: Merging attributes in one XML file with node values in another (identical structure)
From: Florent Georges <darkman_spam@xxxxxxxx>
Date: Fri, 23 Jun 2006 12:45:24 +0200 (CEST)
 RE : Re:  Merging attributes in one XML file with
Dimitre Novatchev wrote:


> It should be possible to write a higher-order function

>   item()*  zipTrees(node() tree1, node() tree2, item()* zipnodeFun(),
> item()*  ziparcFun())

> where we do not know in advance what exactly the functions
> zipnodeFun(), and ziparcFun() will be doing.

> One application is tree merging, another obvious one is tree
> differencing, yet another could produce the results of any binary
> operation (boolean, arithmetic, bit-wise, ...) on any pair of
> corresponding nodes, ..., etc. the possibilities are unlimited.

  Interesting.  But I can't see what zipTrees() is expected to do
exactly.  Could you please explain it a bit further (for example a
simple pseudo-algorithm)?  And what is the role of $zipnodeFun and
$ziparcFun?  BTW "arc" is the French word for "edge" in the graph
theory, but I'm not sure it is relevant here.





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