user=> (import 'java.util.HashMap)
java.util.HashMap
user=> (def m (doto (HashMap.) (.put 'a :a) (.put 'b :b)))
#'user/m
user=> m
#<HashMap {b=:b, a=:a}>
user=> (into {} m)
{b :b, a :a}
user=> (class *1)
clojure.lang.PersistentArrayMap
user=>
On Tue, Nov 17, 2009 at 1:56 PM, Richard Newman <holyg...@gmail.com> wrote:
> Sean,
>
> If the class implements Map, then it already behaves as an associative
> data structure in Clojure. E.g.,
>
> (map (fn [[k v]] (println v))
> (doto (java.util.HashMap.)
> (.put "foo" "bar")
> (.put "baz" "noo")))
>
> (get (doto (java.util.HashMap.)
> (.put "foo" "bar")
> (.put "baz" "noo")) "foo")
> => "bar"
>
> That means you can write read-map as
>
> (defn read-map [m]
> (merge {} m))
>
> -R
>
> --
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--
And what is good, Phaedrus,
And what is not good—
Need we ask anyone to tell us these things?
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