Subject: Functions as data types with XSLT 2.0 (was: Functional program for "list sum")
From: Mukul Gandhi <mukul_gandhi@xxxxxxxxx>
Date: Wed, 8 Jun 2005 23:49:08 -0700 (PDT)
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I wish to know, is it possible to treat functions as
first class data types with XSLT 2.0 ..
Regards,
Mukul
--- Mukul Gandhi <mukul_gandhi@xxxxxxxxx> wrote:
> I am trying to implement a "integer sum" function in
> a
> functional manner .. My stylesheet so far is -
>
> <?xml version="1.0"?>
> <xsl:stylesheet
> xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
>
> xmlns:xs="http://www.w3.org/2001/XMLSchema"
> xmlns:fn="http://whatever"
> version="1.0">
>
> <xsl:output method="text" />
>
> <xsl:template match="/">
> <xsl:variable name="result"
> select="fn:listSum(null,(1,2,3))" />
> <xsl:value-of select="$result" />
> </xsl:template>
>
> <xsl:function name="fn:listSum" as="xs:integer">
> <xsl:param name="num" as="xs:integer" />
> <xsl:param name="list" as="xs:integer+" />
> <xsl:sequence
> select="fn:listSum($num,$list[position() > 1])"
> />
> </xsl:function>
>
> </xsl:stylesheet>
>
> But I am getting following error with Saxon 8.4 ..
>
> "Warning: Running an XSLT 1.0 stylesheet with an
> XSLT
> 2.0 processor
> Error on line 10 of file:/C:/xml/xsleg/xslt/fp.xsl:
> XPTY0004: An empty sequence is not allowed as the
> first argument of fn:listSum
> ()
> Transformation failed: Run-time errors were
> reported"
> ..
>
> Can someone please help me ..?
>
> Regards,
> Mukul
>
>
>
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