From 7925982939a3510548fd65df24de883d6be83554 Mon Sep 17 00:00:00 2001
From: Peter Taoussanis <ptaoussanis@gmail.com>
Date: Mon, 7 Jul 2014 12:41:16 +0700
Subject: [PATCH] Print warning when replacing a custom type reader

---
 src/taoensso/nippy.clj | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/taoensso/nippy.clj b/src/taoensso/nippy.clj
index 928cee9..418f960 100644
--- a/src/taoensso/nippy.clj
+++ b/src/taoensso/nippy.clj
@@ -685,6 +685,9 @@
     (->MyType (.readUTF data-input)))"
   [custom-type-id [in] & body]
   (assert-custom-type-id custom-type-id)
+  (when (contains? @custom-readers (coerce-custom-type-id custom-type-id))
+    (println (format "Warning: resetting Nippy thaw for custom type with id: %s"
+               custom-type-id)))
   `(swap! custom-readers assoc
      ~(coerce-custom-type-id custom-type-id)
      (fn [~(with-meta in {:tag 'java.io.DataInput})]