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Re: [xsl] Testing if an attribute name is in a list of names

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Hi Kevin,

On Thu, May 19, 2005 at 03:26:11PM +0100, Kevin Jones wrote:
> On Thursday 19 May 2005 14:08, Paul A. Hoadley wrote:
> >
> > > I suppose you could use keys for faster access, but I don't know
> > > how that would affect total transform time.
> >
> > You're right, I guess the question is "does this affect the
> > transform time?"  Even the nested for-each constructs don't seem
> > to, probably because the input is only of the order of hundreds or
> > a few thousand rows in my case.  I was just wondering whether
> > there is an idiom in XSL that is analogous to my pseudocode above.
> > I can't seem to hit on it myself.
> 
> Using key() is the easy way to get O(n). You can also solve this via
> contains() against a string built up from the attribute names with
> delimiters but that is less flexible although possibly quicker for
> some datasets, i.e.  not many attribute names to match against or
> few tests to perform.

I'll have to get my XSLT textbook out to work out a solution with
key().  I completely overlooked the contains() function, though, which
is pretty much what I was initially envisaging.


-- 
Paul.

w  http://logicsquad.net/
h  http://paul.hoadley.name/

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