Re: [xsl] speed difference between IE and Firefox during transform?

["Joris Gillis" <roac@xxxxxxxxxx>]

Tempore 19:42:15, die 03/01/2005 AD, hinc in  
xsl-list@xxxxxxxxxxxxxxxxxxxxxx scripsit Sean Whalen  
<seanwhalen@xxxxxxxxxxx>:

>     The stylesheet, at the point of the slowness, has 2 node-set  
> variables, and it is building a 3rd variable by selecting all the  
> members of the first set that have an attribute that is found in some  
> member of the second set.  That block of code looks a little like this:
>
> <xsl:variable name = "revealing" select = "$field[
>         @isBomb != -1  and @isRevealed = 0 and
>       ((concat(@h -1  ,'/', @v   ) = $zeros/@sqID)        or (concat(@h   
> +1  ,'/', @v ) = $zeros/@sqID)
>     )] " />

Hi,

Maybe you could try using keys, they *might* speed it up.

The predicate could then be reduced to this:
<xsl:variable name = "revealing" select = "$field[
       @isBomb != -1  and @isRevealed = 0 and
     $zeros/@sqID=key('zero',concat(@h ,'/', @v ))/@sqID] " />

while the key would be defined in a way like this:

<xsl:key name="zero" match="square" use="concat(@h -1 ,'/', @v )"/>
<xsl:key name="zero" match="square" use="concat(@h +1 ,'/', @v )"/>
<xsl:key name="zero" match="square" use="concat(@h -1 ,'/', @v -1)"/>
...


regards,
--
Joris Gillis (http://www.ticalc.org/cgi-bin/acct-view.cgi?userid=38041)
"Et ipsa scientia potestas est"  - Francis Bacon , Meditationes sacrae