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RE: Which one's faster

Subject: RE: Which one's faster
From: "Jim Fuller" <jim.fuller@xxxxxxxxxxxxxxxxxx>
Date: Wed, 2 Jul 2003 10:57:30 +0100
msxsl faster

> -----Original Message-----
> From: Carlos Barroso [mailto:est-c-barroso@xxxxxxxxxxxxx]

> Hy there.
> I would lie to know which version is faster for the transformer:

in msxml you can use the commandline -t option
http://msdn.microsoft.com/webservices/building/xmldevelopment/xslt/default.aspx?pull=/library/en-us/dnxml/html/msxsl.asp#msxsl_timings

in saxon the commandline for timing is also -t
http://saxon.sourceforge.net/saxon7.6/using-xsl.html


so each XSLT processor has their own way to getting timing information....so why not see for yourself....

> Example 1:
> 
> <xsl:template match="/">
> 	<xsl:for-each select="SITE" />
> 		<p><a href="@url"></a></p>
> 	</xsl_for-each>
> </xsl:template>

by the way you forgot the curly brackets for shorthand

 <xsl:template match="/">
 	<xsl:for-each select="SITE" />
 		<p><a href="{@url}"></a></p>
	</xsl_for-each>
</xsl:template>


> 
> 
> Example 2:
> 
> <xsl:template match="/">
> 	<xsl:for-each select="SITE" />
> 		<p>
> 		<a>
> 			<xsl:attribute name="href">
>                		<xsl:value-of select="@url" />
>             		</xsl:attribute>
> 		</a>
> 		</p>
> 	</xsl_for-each>
> </xsl:template>
> 
> In resume, what's faster: creating the text directly or using the
> <xsl:attribute> for generating the text?

probably the difference in speed would be between the total number of bytes being parsed, whereby the short hand would be slightly faster; but really this type of example is easy for implementators to optimise and I would base my choice on readability rather then some percieved hit in processing time.

there are plenty of other types of scenarios that have differences in speed, such as recursion, google on benchmarking xslt and you will get a sense of which processors are quicker, and what idioms are more effective ( or relevent ).

hth, jim fuller



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