Subject: Re: [xsl] Checking element to see if it has children... From: David Carlisle <davidc@xxxxxxxxx> Date: Tue, 9 Dec 2003 14:06:49 GMT |
> Of course the most obvious to me is that trees grow "up" > from the root, Computer scientists. they spend too long indoors and never quite got the hang of which way up a tree grows. > "It's *like* a tree rather than it *is* a tree--if we're > using analogies.) It's no longer really an analogy, a "tree" has a techical definition: it _is_ a rooted acyclic connected graph, ie a network with one distinguished node, from which you can reach every other node in the network, and there are no loops. The thing that allegedly grows outside is just some folk memory of a more rural time:-) > I'm thinking about attributes because they're not extensible. ah, yes you have to extend the concept to "labeled trees" in which the nodes have structure to capture attributes. (Or alternatively, and closer to the Xpath model, you have to have different kinds of branches in your tree, as well as the usual branches expressing child relationship, you need other kinds, for attributes and namespaces.) > I appreciate it when people take the time to > help me but I don't appreciate it when people refer me to the FAQ. Many people ask on the list because they've been sent here (eg from xml-dev:-) so they may not even know there is a faq. I just pointed out its existence as a possibly useful piece of extra information over the specific answer I gave. > At present, the concepts > are presented incorrectly for incidental learning as there aren't any > conceptual relationships (analogies) being taught the FAQ is what it says it isL a list of fewquently asked questions, if you want a more organised themed tutorial site there are plenty of those as well (eg zvon's) or books such as Jeni's beginning xslt. David -- http://www.dcarlisle.demon.co.uk/matthew ________________________________________________________________________ This e-mail has been scanned for all viruses by Star Internet. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________ XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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