Don’t call me DOM

1 September 2004

Dealing with dates in cwm

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cwm is the main Semantic Web toolkit I use to manipulate RDF; while it has some speed issues – really, it shouldn’t have them in the next release -, it allows to use N3 Rules which are tricky to write, but are so much more powerful than declarative programing that at least you feel good once you have written them.

A recurrent pattern I have encountered regards dealing with date differences, e.g. comparing the date of publication of a document with the current date; here is what I’m using (e.g. in detect-missing.n3):

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Picture of Dominique Hazael-MassieuxDominique Hazaël-Massieux ( is part of the World Wide Web Consortium (W3C) Staff; his interests cover a number of Web technologies, as well as the usage of open source software in a distributed work environment.