Re: [xsl] finding the position of a node within a node set

[Michael Kay <mike@xxxxxxxxxxxx>]

On 26/08/2012 09:07, Michael Kay wrote:
> On 26/08/2012 07:49, Ihe Onwuka wrote:
> > Assuming Xpath 2.0 take a look at the index-of function.
>
> No, index-of() is no use because it compares nodes by value rather 
> than by identity.
I overlooked that what you are trying to do is to get the position of 
the node with a given @id value, rather than a node whose identity is 
known ($node).

In XPath 2.0, if every node has an @id attribute, and if the nodes are 
in document order, you could use

index-of($nodes/@id, 'foo')

If some nodes have no id attribute, or if you want to avoid sorting the 
nodes into document order, you could vary this to

index-of($nodes/string(@id), 'foo')

Michael Kay
Saxonica