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Re: side-effect-free (was Re: Can solve the N-queens - but can't count!)

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James Tauber writes:
 > <xsl:template match="A">
 >     <xsl:apply-templates select="B"/>
 >     <xsl:apply-templates select="C"/>
 > </xsl:template>
 > 
 > As I understand, the side-effect-freeness of XSL means that when processing
 > this above template, you can go and apply the template for C before the
 > template for B, or run both in parallel, etc without having to worry that
 > something that applying one template does will affect the application of the
 > other.
Are you sure?

If the "apply-templates" generate result tree fragments (as
they usually do), reordering will produce a different tree.
Beside this, you are right. You can change the evaluation
order without effect as long as you ensure that the result
tree fragments are plugged in in the right result tree position.

- Dieter


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