Subject: Re: [xsl] Modeling matrices in an XML environment From: "Dr. Roger L Costello costello@xxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> Date: Thu, 16 Jul 2020 16:11:56 -0000 |
This is a really fascinating discussion. Thank you. Michael Kay wrote this interesting sentence: > It's an argument against using XML trees for > working data structures when implementing > complex algorithms - which is why XSLT 3.0 > provides an alternative. But, but, but, ... Algorithms require data structures, right? Even complex algorithms require data structures. Isn't the XSLT map construct a data structure? Are you saying that some data structures should be used in certain algorithms while other data structures should be avoided? When is an appropriate use of an "XML data structure" and when is it inappropriate? /Roger From: Michael Kay mike@xxxxxxxxxxxx <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> Sent: Thursday, July 16, 2020 7:01 AM To: xsl-list <xsl-list@xxxxxxxxxxxxxxxxxxxxxx> Subject: [EXT] Re: [xsl] Modeling matrices in an XML environment Liam wrote this really interesting paragraph: The benefit to using maps or arrays over elements in XSLT or XQuery is that element nodes are too heavyweight, and too prone to turning their content back into strings. In XQuery in particular, constructors by default do a terrible and dismal thing: <x>3</x> makes a text node inside an x element. And XDM element nodes have a ton of properties, such as next, previous, parent, schema type, is_happy, none of which are needed for a matrix of numbers. Yikes! Isn't that an argument against using XML and XSLT? It's an argument against using XML trees for working data structures when implementing complex algorithms - which is why XSLT 3.0 provides an alternative. Michael Kay Saxonica http://www.mulberrytech.com/xsl/xsl-list http://lists.mulberrytech.com/unsub/xsl-list/673357 ()
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