Re: GOOPS generic methods and smobs

[Mikael Djurfeldt]

"Lars J. Aas" <address@hidden> writes:

> I just discovered that I can use generic methods and smobs together,
> something I didn't expect to work, nor have I seen it documented anywhere.
> 
> (define-method (test-method arg) (display "default\n"))
> (define-method (test-method (arg <mysmob>)) (display "specific\n"))
> 
> (test-method "string")
> => default
> (test-method (make-mysmob))
> => specific
> 
> Is this something that is supposed to work, and will work in the future
> (as long as smobs are supported)?

Yes.

> What is the class precedence list of a smob (is it directly under
> <top>,

Yes.

> and can I get Guile (GOOPS) to believe that one smob type is derived
> >From another smob for use in generic method arbitration?

No.

If your objects are related by inheritance, the recommended
representation will be GOOPS objects.  However, we need to develop the
C API first.

Best regards,
/mdj