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Updates the docstring for soft-cache-factory.

Signed-off-by: fogus <>
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1 parent a6003a0 commit af5ebb6b3a4afcca96ee34704f575c130bf8a9f9 @pjstadig pjstadig committed with fogus Jun 16, 2012
Showing with 4 additions and 1 deletion.
  1. +4 −1 src/main/clojure/clojure/core/cache.clj
5 src/main/clojure/clojure/core/cache.clj
@@ -599,7 +599,10 @@
(defn soft-cache-factory
"Returns a SoftReference cache. Cached values will be referred to with
SoftReferences, allowing the values to be garbage collected when there is
- memory pressure on the JVM."
+ memory pressure on the JVM.
+ SoftCache is a mutable cache, since it is always based on a
+ ConcurrentHashMap."
{:pre [(map? base)]}
(seed (SoftCache. (ConcurrentHashMap.) (ConcurrentHashMap.) (ReferenceQueue.))

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