On Fri, Jan 20, 2012 at 1:34 AM, Mark Engelberg
<mark.engelb...@gmail.com> wrote:
> I think this works:
>
> (defmacro memofn [name args body]
>  `(let [cache# (atom {})]
>     (fn ~name ~args
>       (if-let [e# (find @cache# ~args)]
>         (val e#)
>         (let [ret# ~body]
>           (swap! cache# assoc ~args ret#)
>           ret#)))))
>
> If you spot any problems with this that I'm missing let me know.

Multi-sexp bodies will screw this one up. Change ~body to (do ~@body)
to fix that.

> Thanks for brainstorming with me!

You're welcome.

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