Hi Siemen IIRC this was known as "wide classes", there is some paper about it. Cheers,
Hernán 2018-03-02 15:45 GMT-03:00 Siemen Baader <siemenbaa...@gmail.com>: > Hi all, > > it seems like we cannot cast the class of object to its subclass if that > subclass has had new instance variables added to it: > > http://forum.world.st/changing-the-class-of-an-existing-object-to-a-subclass-td4239041.html > > But I (think) I need it - I'm transforming a DOM tree from XMLHTMLParser's > XMLElement s to a subclass of Iliad's ILHTMLBuilderElement s, and for single > occurences I would like to use the more specific subclasses, like > ILCheckboxElement. I can make the cast manually, I know when it is safe to > do. > > What else could I do, apart from removing the element from its tree, > creating a new (subclass) instance and then putting this element in place of > the old one? Some #perform or `super` magic..? > > hm.. > > thanks for any pointers! > > -- Siemen
