Hi Dave: Thanks for the reply.
You instantiated AnArray. Try this: class AnArray < Array; end AnArray.kind_of?( Array ) will return false is_a? doesn't work on the class object. I don't know if it supposed to but other than creating an instance the only alternative is a loop requesting the superclass. AnArray.superclass == Array will return true Bob Rice On Jan 19, 2011, at 4:14 PM, Dave Baldwin wrote: > Have you tried kind_of? method, > > i.e. > > class AnArray < Array > end > > a = AnArray.new > > a.kind_of? Array will return true > a.kind_of? String will return false > > assuming I haven't miss understood your question. > > Dave. > > On 19 Jan 2011, at 21:06, Robert Rice wrote: > >> Hi: >> >> I notice that the obj.is_a? method does not work on a class constant. It >> only works on an instance of the class. >> >> Is this the way it should work? Do I need to create a loop checking using >> the superclass method to check the inheritance of a class or is there an >> easier way? >> >> Thanks, >> Bob Rice >> >> _______________________________________________ >> MacRuby-devel mailing list >> MacRuby-devel@lists.macosforge.org >> http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel > > _______________________________________________ > MacRuby-devel mailing list > MacRuby-devel@lists.macosforge.org > http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel > _______________________________________________ MacRuby-devel mailing list MacRuby-devel@lists.macosforge.org http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel
