Re: Aha! moments


Zach Beane ha escrito:


I haven't used CLOS's object evolution protocol yet
(i.e. update-instance-for-redefined-class, make-instances-obsolete),
but the fact that the object system accomodates evolution of state
without throwing out progress so far is very encouraging.

Any point on how to do it?
And another question too: how to redefine generic functions in a living
environment to change, for example, the number of arguments, supposing
that you have already defined methods to that generic function?

.