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Unpredictable evaluation of boolean in XPath expression
- To: <xsl-list at mulberrytech dot com>
- Subject: Unpredictable evaluation of boolean in XPath expression
- From: Aaron Miller <amiller at zatso dot com>
- Date: Thu, 21 Sep 2000 19:13:57 -0700
- Reply-To: xsl-list at mulberrytech dot com
This is interesting and infuriating. Maybe someone knows why it happens. I
have:
<xsl:variable name="enhancementRows">
<xsl:choose>
<xsl:when test="//enhancementList/graphic or //enhancementList/text">
45px,60px,*
</xsl:when>
<xsl:otherwise>
45px,*
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
when I test this logic with something that I know should evaluate to false,
it works MOST of the time. however, sometimes it doesn't. Meaning what is
false is somehow evaluating to true.
I tested this as a fix:
<xsl:choose>
<xsl:when test="//enhancementList/graphic or //enhancementList/text">
<xsl:variable name="enhancementRows"> 45px,60px,* </xsl:variable>
</xsl:when>
<xsl:otherwise>
<xsl:variable name="enhancementRows"> 45px,* </xsl:variable>
</xsl:otherwise>
</xsl:choose>
and found that it results in an error, at the line with <xsl:choose> in it.
So what is wrong with each of these?
thanks
aaron
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