Guys,
I've searched the group and cannot find an answer to this one...
Why are many of the more common collection types in Clojure not
Serializable :
Clojure 1.1.0-new-SNAPSHOT
user=> (def #^java.io.ObjectOutput os (java.io.ObjectOutputStream.
(java.io.FileOutputStream. "/dev/null")))
#'user/os
user=> (.writeObject os [1 2 3 4])
java.io.NotSerializableException: clojure.lang.PersistentVector$Node
(NO_SOURCE_FILE:0)
user=> (.writeObject os (list 1 2 3 4))
java.io.NotSerializableException: clojure.lang.PersistentList
(NO_SOURCE_FILE:0)
user=> (.writeObject os #{1 2 3 4})
java.io.NotSerializableException: clojure.lang.PersistentHashMap
$BitmapIndexedNode (NO_SOURCE_FILE:0)
user=> (.writeObject os {:1 2 :3 4})
nil
user=>
I am writing a distributed Java/Clojure app and am constantly bitten
by this. I am always having to copy collections into ArrayLists before
sending them, from Java code, over the wire...
ArrayLists, however do not implement Comparable and I now need a
Comparable AND Serializable collection. :-(
Is there a wishlist for Clojure 1.2 ? :-)
Is there a good reason why making '(), [], {} and #{} Serializable
should not be on it ?
thanks
Jules
P.S.
I'm using 1.1.0-new-SNAPSHOT - is there another version that
implements this, hence the lack of noise on the list ?
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