How do I remove from a nested datastructure the objects whose (pr obj) representation doesn't comply with the EDN specification? Fx, {:a 1 :b (find-ns 'user)} → {:a 1} Or, easier, how do I just not print these objects?
I want to extract the metadata maps from arbitrary Clojure objects and write them to files. Metadata maps allow arbitrary objects as keys and values. Of course I want to be able to read the files again, preferably with clojure.edn/read. I am aware that the Clojure printing system is extensible and therefore it's not possible to define a sensible predicate like (re-readable? x). So I was looking for a way to convince the printing system just to ignore objects that would otherwise end up with a #< in the output. I didn't find any. What I found was this: http://dev.clojure.org/pages/viewpage.action?pageId=8192126 and tried out Fipp, but it also just prints out #< objects. The (assert (= (clojure.edn/read-string (pr-str value)) value)) might work. But it's extremely ugly and probably also slow. For nested data structure I'd expect it to get even uglier. Hmm, on second glance, I might be able to extend Fipp to do what I want. Still, I'd appreciate any other ideas. Richard -- 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.