RE: My report on experiments with unused namespaces
Michael Kay wrote: > I actually came across one usage of XML in which the namespace > declaration in > > <a xmlns:v="http://www.x.com/"/> > > was considered significant. They were using it, rather as some people > use processing instructions or comments, as a device for adding > information to an XML document (in this case, a kind of version > attribute) without having to modify the schema. What do you think about that? Is it a good idea? Until I saw that I was ready to pronounce all unused namespaces as evil, for the reason Simon sighted: I have heard of hacks which used namespace declarations as kind of a backchannel for propagating information But, in light of the above usage I must reconsider. What do you think, is it best practice to delete all unused namespaces from an XML instance document? Or are there genuinely legitimate uses for unused namespaces? Is it a (bad) hack to employ unused namespaces as a device for injecting unchecked, out-of-band information into the XML document? /Roger
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