Hyphens vs underscores in element names
Hello XML-DEV One of the more popular arguments between the development team for FieldML regards a convention for the naming of elements and attributes in our ML collection. The debate focuses over whether we should use underscores (num_elements), hyphens (num-elements), capitalisation (numElements) or runtogether (numelements). We've eliminated capitalisation and runtogether because they don't look as nice, and are now reduced to hyphens vs. underscores. The older part of the development team is familiar with Fortran and C and are keen to use underscores. However I've noticed in a brief survey (results below) that most of the W3C-endorsed stuff seems to feature minus signs. Can anyone suggest any compelling reasons for going either way? Does anyone want to add more data to my survey? The Fortran coders also argued that there might be confusion with arithmetic minus signs, if an application was to display something like "mesh-1 - element-1", where "mesh-1" and "element-1" are identifying attributes of type NMTOKEN (would have used ID but we don't require uniqueness within a file). However since I cannot prevent someone from using hyphens in an attribute value (without resorting to schema validation), I don't think this holds. The argument continued that users would be encouraged to use underscores in identifiers if the element names also used underscores. Begin Survey Results ==================== Hyphens (last 2 not XML applications, but W3C) : XSLT = <for-each>, <call-template>, etc. XPath & XPointer = ancestor-or-self, etc SMIL = <root-layout> @skip-content W3C spec names = REC-DOM-Level-1-19981001 XHTML module names = xhtml11-tableb-1.mod Underscores : BioML = <dna_type> <keep_space> (not W3C) Runtogether (I suspect this was chosen for legacy reasons ??) : MathML = <maligngroup> XHTML = <textarea> @colspan Capitalisation (not all W3C WDs or Notes) : XML-Schema = <unparsedEntity> @schemaName SVG (Scalable Vector Graphics) = <animateMotion> CDF (Channel Description Format) = <PublicationDate> TEI (Text Encoding Initiative) = <docImprint> OCS (Open Content Syndication) = <updatePeriod> End Survey Results ================== In case anyone is interested, FieldML is a language for marking up spatially and time varying fields, targeted at finite element packages (in particular some software developed at Auckland called CMISS). The development of FieldML can be followed here http://www.esc.auckland.ac.nz/sites/physiome/fieldml/pages/ -- Warren Hedley Department of Engineering Science Auckland University New Zealand xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i... Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ or CD-ROM/ISBN 981-02-3594-1 Unsubscribe by posting to majordom@i... the message unsubscribe xml-dev (or) unsubscribe xml-dev your-subscribed-email@your-subscribed-address Please note: New list subscriptions now closed in preparation for transfer to OASIS.
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