I haven't answered this because I've spent the last three days trying to get Sean Ross's patch to work; the tests run green with it, but if you run the tests again they fail.
The easiest way to answer this problem is to try it. I may have to back out the changes that Sean sent in; they interact very badly with the postmodern interface --- or at least the most recent version of it. I suspect that I may also be dealing with an SBCL bug of some kind in the MOP. I never set out to spend three days on this---the solution always seemed to be right around the corner. On Wed, 2007-12-19 at 10:50 +0100, Leslie P. Polzer wrote: > The user's guide talks about added and discarded slots, but what's the > behaviour > when a slot changes? > > Suppose I represent a picture with an object PIC that contains the location of > a file holding it. I store a bunch of other objects that each have a picture: > > (defpclass myobj () > ((picture :type PIC))) > > Now I decide later on that a string would be enough > > (defpclass myobj () > ((picture :type STRING))) > > What will happen? A bad thing, i.e. a deserialization error? > Is there a way to define how a PIC should be converted to a STRING? > > Leslie > _______________________________________________ elephant-devel site list elephant-devel@common-lisp.net http://common-lisp.net/mailman/listinfo/elephant-devel
