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RE: Transitive closure for XPath

From: Michael Kay <mhkay@iclway.co.uk>
Date: Mon, 23 Apr 2001 22:58:17 +0100
To: "'Christian Nentwich'" <c.nentwich@cs.ucl.ac.uk>, <xsl-editors@w3.org>
Message-ID: <003a01c0cc41$9f4b59f0$0100007f@PCUKMKA>
> I would like to forward to you the URL of a proposal for a transitive
> closure operator for XPath.
>
> http://www.cs.ucl.ac.uk/staff/c.nentwich/closure/index.html
>
I think there's an underlying, more fundamental requirement here, namely a
requirement for higher-order functions in XPath.

If functions can be supplied as arguments to a function call or returned as
results of a function call, then it's reasonable to define a function that
takes a function as its input and returns its transitive closure as its
result; without that, it seems very difficult.

Mike Kay
Received on Monday, 23 April 2001 18:04:12 GMT

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