Subject: [xsl] XSLT 2.0 function - fastest node comparison From: "Andrew Welch" <ajwelch@xxxxxxxxxxxxxxx> Date: Thu, 10 Mar 2005 13:43:09 -0000 |
I'm checking if a number exists within a set of ranges. The ranges are stored as a variable: <xsl:variable name="ranges"> <range from="988" to="989"/> <range from="1008" to="1009"/> <range from="1014" to="1014"/> <range from="1025" to="1036"/> <range from="1038" to="1103"/> <range from="1105" to="1116"/> <range from="1118" to="1119"/> <range from="4150" to="4150"/> <range from="8194" to="8197"/> ... </xsl:variable> I've written a function that accepts an integer and returns true or false if the number exists within one of the ranges: <xsl:function name="f:isInRange" as="xs:boolean"> <xsl:param name="char" as="xs:integer"/> <xsl:sequence select="if ($ranges/range[@from <= $char][@to >= $char]) then true() else false()"/> </xsl:function> -Is there a better way of writing this? -How efficient is the test? Does it check each <range> element sequentially in document order? thanks andrew
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