Re: how to increment a variable in a for-each loop

I have a code snippet as below:
<xsl:template match="*" mode="diff_cols">
<xsl:for-each select=".">
    <xsl:if test="position() mod 2 = 1">
	<fo:table-cell  background-color="red">	
<fo:block><xsl:value-of select="."/></fo:block>
	</fo:table-cell>
    </xsl:if>
    <xsl:if test="position() mod 2 = 0">
	<fo:table-cell  background-color="blue">
        <fo:block><xsl:value-of
select="."/></fo:block>
	</fo:table-cell>
    </xsl:if>
    </xsl:for-each>
</xsl:template>

Unfortunately, it did not work.  The background color
in all columns is red.

Can you help to debug?


Yan



--- David Carlisle <davidc@xxxxxxxxx> wrote:
> > I wonder if any one knows how to increment a
> variable
> > value in a for-each loop just like in other
> > programming languages.
> 
> As is the case with other declarative languages, you
> can not change the
> value of a variable once it is bound.
> 
> >   I need to check this value so
> > that I can change the background color for every
> other
> > column in a table.
> 
> This is a FAQ (an an example in the spec) just use
> the value of
> position() mod 2
> will will be either 0 or 1 as you go through the
> loop.
> 
> David
> 
>
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