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 don't think so, if we have e.g.
<root>
<Response>
<Users>
<Count>2</Count>
<User>
<Username>henry</Username>
<Online>false</Online>
<UserId>302</UserId>
</User>
<User>
<Username>felix</Username>
<Online>false </Online>
<UserId>288</UserId>
</User>
</Users>
</Response>
<Response>
<Friends>
<Count>2</Count>
<Friend>
<UserId>288</UserId>
</Friend>
<Friend>
<UserId>42</UserId>
</Friend>
</Friends>
</Response>
</root>
then with
$users[not(. = $friends)]
we select those User/UserId elements for which there is no Friend/UserId
with the same value while
$users[. != $friends]
selects those User/UserId elements for which there is at least one
Friend/UserId element with a different value.
--
Martin Honnen
http://JavaScript.FAQTs.com/
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