On Apr 8, 2005 9:55 PM, Michael Kay <mike(_at_)saxonica(_dot_)com> wrote:
What will really be useful is a function with an argument of item(),
that returns the real type of the argument.
This would be trivial to achieve if same-arity function
overloading was allowed.
Does anybody know of another way?
You can write
<xsl:choose>
<xsl:when test="$arg instanceof xs:boolean">boolean</xsl:when>
<xsl:when test="$arg instanceof xs:string">string</xsl:when>
etc.
Until now I was under the impression that the "instance of" operator
is usable only if the value has been type-annotated as result of
validation against a specific xml schema (as described on page 287 of
the XPath 2.0 book), (which may not be the case with a significant
part of all transformations written and used in the real world).
Is my understanding of the applicability of the "instance of" operator wrong ?
Cheers,
Dimitre Novatchev
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