> The only catch is putAll return void (WHY!)
Apparently Java people like having more LOC :)
> (defn put-all
> [java-map clj-map]
> (doto java-map
> (.putAll clj-map)))
Note that this isn't limited to Clojure maps, so 'clj-map' is probably
a bad variable name. It works just as well for combining two Java maps.
(import 'java.util.Map 'java.util.HashMap)
(defn put-all
[#^Map java-map #^Map clj-map]
(doto java-map
(.putAll clj-map)))
user=> (put-all (HashMap. {:foo :bar}) (HashMap. {:bar :baz}))
#<HashMap {:bar=:baz, :foo=:bar}>
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