Hello all, I'm taking a look at CLOS examples and most extend the <slot> class to add the behavior they need. Consider this example from json-mop [0] where the author wants to add two fields to the slot.
After this is done they wire up the new slot class definition to be used by all classes that have json-serializable-class as the metaclass [1]. This makes sure that the new slot class will be used when required. I have started reading about GOOPS but it's not very explicit on if this pattern is possible or if there is an equivalent one. Is there an example of using the GOOPS to implement such a library? Have a nice day! Edoardo [0]: https://github.com/gschjetne/json-mop/blob/master/src/json-mop.lisp#L33 [1]: https://github.com/gschjetne/json-mop/blob/master/src/json-mop.lisp#L45
