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noisesmith/using alter-var-root (refheap import)

Created December 24, 2015 23:52
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using alter-var-root (refheap import)
kingfisher.core=> (alter-var-root #'in-ns (fn [f] (fn [& args] (println "switching ns!") (apply f args))))
#object[kingfisher.core$eval31119$fn__31120$fn__31121 0x16c9cab3 "kingfisher.core$eval31119$fn__31120$fn__31121@16c9cab3"]
kingfisher.core=> (in-ns 'user)
switching ns!
#object[clojure.lang.Namespace 0x6406ea3c "user"]
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