Subject: RE: [xsl] Wath is the opposite of the union operator? From: "Michael Kay" <mike@xxxxxxxxxxxx> Date: Thu, 22 Sep 2005 12:49:38 +0100 |
> Subject: [xsl] Wath is the opposite of the union operator? > > Or puting it in another way, how do i select a group of nodes selected > by some xpath expression EXCEPT the ones that are selected by another > xpath expression? The operation you are referring to is usually called "set difference". In XPath 2.0, the operator is spelt "except". There is also a set intersection operator spelt "intersect". There's no equivalent to these in XSLT 1.0, though some processors support the EXSLT set:difference() and set:intersection() functions. You can expensively code A except B => A[count(.|B) != count(B)] A intersect B => A[count(.|B) = count(B)] Michael Kay http://www.saxonica.com/
Current Thread |
---|
|
<- Previous | Index | Next -> |
---|---|---|
Re: [xsl] Wath is the opposite of t, António Mota | Thread | Re: [xsl] Wath is the opposite of t, António Mota |
RE: [xsl] Strict sequential identit, Michael Kay | Date | Re: [xsl] Wath is the opposite of t, António Mota |
Month |