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RE: [xsl] Comparing node for identity using union
Subject: RE: [xsl] Comparing node for identity using union From: "Michael Kay" <mike@xxxxxxxxxxxx> Date: Thu, 13 Jan 2005 23:38:07 -0000 |
> I run to the debuger i see that > > (count(parent::Menu|$snode)=1) is allways true, even when $snode no > node, and even when there is no parent::Menu . count(A|B)=1 will be true if A contains one node and B is empty, or if B contains one node and A is empty, or if both A and B contain a single node and this is the same node. This is only a safe test for identity if you know that each of the node-sets A and B is a single node. If you're not sure of that, a safer test is count(A)=1 and count(B)=1 and count(A|B)=1 Michael Kay http://www.saxonica.com/
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