At 2009-02-11 14:38 +0000, Andrew Welch wrote:
> For the (short) example data posted it does not matter but in general I
> think the above should be
> <xsl:value-of select="$users[not(. = $friends)]"/>
> as that is quite different from $users[. != $friends].
Is that right? It always takes me a while to "get it" again, but I
think you only need to be concerned about != when both sides are
sequences of more than 1 item. When the LHS is a single item, it's
ok.
So the above are equivalent.
I think not, Andrew ... Martin is correct. I had already composed a
correction to my own answer when I noted that both Martin and you
correctly used not(), so I didn't bother sending it.
Consider that when $friends is empty, there will be no $users
selected when using:
$users[. != $friends]
... because the predicate will be false for every test.
. . . . . . . . Ken
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