On Fri, Mar 2, 2018 at 9:21 PM, Esteban A. Maringolo <emaringolo@gmail.com> wrote:

"Castings" are aliens in the Smalltalk world, although there is a
#become*: method family, I would discourage you from using it as an
alternative unless you really need to do it.

Ok, thanks. I think this use case is specific enough for casting to be useful, but I see your point.��

If your use case is that concrete, I'd do something like:

`ILHTMLBuilderElement fromXMLElement: anXMLElement`

Yes.. :)

-- Siemen

��

Then all subclasses of `ILHTMLBuilderElement` will know what to look
and what to omit from the `XMLElement` parameter.

Regards!

Esteban A. Maringolo

2018-03-02 17:08 GMT-03:00 Stephan Eggermont <stephan@stack.nl>:
> Siemen Baader <siemenbaader@gmail.com> wrote:
>>
>> 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..?
>
> Use composition? Generate accessing code where necessary.
> Is this very performance critical code?
>
> Stephan
>
>
>