> Fei Zheng wrote:
> 
> > I'd like to have an unique solution list.  Anyone can tell what's
>  > wrong with the following code which gives all solutions instead of
>  > the unique solutions?
> >     	      select="item[not(metadata/solution = 
> preceding-sibling::metadata/solution)]/metadata/solution"	/>
> 
> You are using the preceding-sibling on the wrong element.
> Try
>    select="item/metadata/solution[not(. = 
> preceding-sibling::solution)]"/>
> 
> J.Pietschmann

But this will not give the right results because it only checks
for *siblings* that are the same, whereas Fei Zheng wants to
eliminate duplicates that are second cousins too.

How about
  select="item/metadata/solution[not(. = preceding::solution)]"

Or go Muenchian. (Btw how do you pronounce that?)

Lars


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