[xquery-talk] Removing douplicate elements
EXTERNAL Kruse Peter (Praktikant;
CR/AEA1-Si)
external.Peter.Kruse at de.bosch.com
Thu Aug 11 12:00:21 PDT 2005
Hi Folks
> Actually, the error message looks rather like a Saxon message. Saxon
does
> have tail-call optimization, and it's not obvious why it's not being
used
> here (which version are you using?).
I was using 8.4 but i will migrate to 8.5 today (any problems to fear?)
> There isn't a built-in limit on the
> depth of function calls; rather Saxon catches the
StackOverflowException and
> turns it into this error message.
> Having said that, the algorithm looks pretty inefficient, and I'm sure
one
> could do better.
What algorith are you talking about here? Mine or Martin's ?
> declare function local:notIn($pivot as node(),$list as node()*) as
> xs:boolean {
> if ( for $elem at $index in $list
> return
> if ( deep-equal($pivot, $elem) )
> then true()
> else ()
> ) then true()
> else false()
> }
Thank you Martin, this works well.
If anyone out there has an idea about a more efficient way doing this,
comments and hints welcome.
Peter
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