On Wednesday, March 28, 2012 at 9:15 AM, Shantanu Kumar wrote:
>
>
> On Mar 28, 8:57 pm, Ram Krishnan <kriyat...@gmail.com (http://gmail.com)>
> wrote:
> > Did you just need the name of the function? something like this?
>
>
> Sorry, I should explained using code what I am looking for:
>
> (defmacro find-name []
> ;; some magic here
> ..)
>
> (defn foo []
> ..
> (println (find-name)) ; should print "foo"
> ..)
>
> I am looking for a way to write the `find-name` macro. So, you can see
> I want to use it with regular functions defined using `defn`.
>
>
If you can't use a specialized `defn` you could try something like the
following, assuming that you need this for just a temporary while (say during
development):
---------------->8----8<----------------
(def ^{:dynamic true} *myself* nil)
(defn find-name [] *myself*)
(defmacro trace [sym]
`(let [old# ~sym]
(def ~sym (fn [& args#]
(binding [*myself* '~sym]
(apply old# args#))))))
(defn foo [a b] [(find-name) (+ a b)])
(foo 1 2) => [nil 3]
(trace foo)
(foo 1 2) => [foo 3]
---------------->8----8<----------------
It requires you explicitly `trace` the functions within which you want to call
`find-name`, otherwise the name will just be `nil`.
>
> Shantanu
>
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