On Fri, Feb 10, 2012 at 3:13 AM, drewn <naylor...@gmail.com> wrote:
> I've just started learning protocols, deftype, etc. The first thing I
> did was try to extend a Clojure type (maps) to operate as a
> specialized Java Swing interface (AttributeSet), forgetting that
> interfaces are not protocols; i.e.
>
> (extend-type clojure.lang.PersistentArrayMap
> javax.swing.text.AttributeSet
> (getAttribute [this k]
> (get this k)))
I think in this case you should be able to use proxy, maybe.
user=> (defn attribute-list [map] (proxy [javax.swing.text.AttributeSet] []
(getAttribute [k] (get map k))))
user=> (.getAttribute (attribute-list {:a 1 :b 2}) :a)
1
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