Re: SGML to HTML with jade?

["James Clark" <jjc@xxxxxxxxxx>]

Jade's implementation of node-lists is lazy: if you don't traverse a
node-list it won't built it.  I think it's your definition of subtree
that's causing the slowness.  Try using descendants instead of subtree in:

   (build-index (select-elements (subtree (current-node))
"INDEXTERM")))))))

James

> The next version still traverses the node list but returns an empty list
of index 
> entries. The total time taken is about 60 seconds. The difference being
the time 
> taken to build the list entries, sort and output the list. (not a huge 
> difference)
> 
> (define (build-index nl)
>   (let loop ((result '())
> 	     (nl nl))
>     (if (node-list-empty? nl)
> 	result
> 	(loop '() (node-list-rest nl)))))
> 
> This version doesn't bother to traverse the node list at all! It takes
about 
> 10 seconds. (A huge difference)
> 
> (define (build-index nl)
>   '())
> 
> Am I being incredibly thick or is Jade taking a long time to execute 
> node-list-empty? and/or node-list-rest ?


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