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drewr/gist:359490

Created April 7, 2010 21:31
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gistfile1.txt
% rlwrap java -jar clojure.jar
Clojure 1.2.0-master-SNAPSHOT
user=> (deftype Foo [] clojure.lang.IPersistentMap)
#'user/Foo
user=> (merge {} (Foo))
java.lang.NullPointerException (NO_SOURCE_FILE:0)
user=> (merge (Foo) {})
java.lang.UnsupportedOperationException: nth not supported on this type: PersistentArrayMap (NO_SOURCE_FILE:0)
user=> ^D
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