It seems to me that defmulti should create a new instance of MultiFn, initialized with the method tables from the existing MultiFn, if any. Then alter-var-root to update the Var holding the MultiFn.
A possible problem is that a new dispatch function might be inconsistent with the existing keys and values in the method tables. You can fix that, with some pain by hand, with remove-all-methods <https://clojure.github.io/clojure/clojure.core-api.html#clojure.core/remove-all-methods>, or remove-method <https://clojure.github.io/clojure/clojure.core-api.html#clojure.core/remove-method> . In any case, I think this possible inconsistency is less likely a problem than similar issues that may arise from sharing the global hierarchy. On Wednesday, September 5, 2012 at 10:15:13 AM UTC-7, red...@gmail.com wrote: > > if I recall, the current defonce like behavior of multimethods was a > response to the situation where if you have your multimethods split > across multiple files reloading the file with the defmulti in it would > re-def the multimethod with the new dispatch, but it would not have > any of the methods loaded from the other files. > > oscillating between these poles at about 6.31139e7hz seems less than > ideal. > > maybe defmethod could try and capture the ns a method is defined in, > and defmulti would try to force a reload? seems overly complicated for > core. > > > -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
