I'm using clojure.walk/postwalk to rewrite terms in nested data structures. However, I am unable to do this with types as defined by defrecord, because they specify that the function "empty" throw a not- implemented exception.
If I were able to over-ride this default implementation of 'empty' I believe I could still use postwalk to rewrite my custom records (as they happily implement 'into' which works as expected.) This was my obvious first attempt: (defrecord TypeVar [guid name] clojure.lang.IPersistentCollection (empty [coll] (TypeVar. 0 nil))) Which fails due to: "Duplicate method name&signature in class file types/TypeVar" [Thrown class java.lang.ClassFormatError] I would prefer not to fall back on deftype as I do wish these objects to behave as maps. I also could write my own version of postwalk that doesn't call 'empty' on my custom-defined records, but it would be nice to make my types adhere to the contract of IPersistentCollection as much as possible. -- 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
