hi Tassilo,

that's great, thanks. I current use a function wrap reify, it's simple.

(defn make-reify [entity] ...)

(defmacro def-site-entity
`(let [e# (create-e)]
   (def ~ent (make-reify e#))))

Joe


On Wed, Dec 18, 2013 at 8:14 PM, Tassilo Horn <t...@gnu.org> wrote:

> Xiangtao Zhou <tao...@gmail.com> writes:
>
> Hi!
>
> > I want to use reify in macro, but the namespace is the problem. the
> > following code shows what have done. is there a way to make it right?
>
> Probably this will work:
>
> (defmacro def-site-entity
>   [ent & body]
>   `(let [e# (create-e)]
>      (def ~ent (reify ~'clojure.lang.ILookup
>                  (valAt [key# not-found#]
>                    (condp = key#
>                      :db (deref ~'t1)
>                      :options (deref ~'t2)
>                      (get e# key# not-found#)))))))
>
> Basically, every symbol that shouldn't be qualified but should appear as
> written in the macro definition has to be prefixed with ~'.  I think you
> could also write ~'@t1 instead of the more verbose form (deref ~'t1) but
> I wasn't sure.
>
> Bye,
> Tassilo
>



-- 
Zhou Xiangtao
Email: tao...@gmail.com

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