Mark <[email protected]> writes:
> I find the vast majority of the time I'm tempted to write a macro (yeah,
> yeah, I know the first rule of macro club), is to defn-like things.
> Writing a defn-like macro to handle all the stuff defn does is pretty tough
> so I end up writing a barebones thing that doesn't support doc-string,
> doesn't support multiple arities, and doesn't support metadata. I'm
> wondering, has anyone written a defdefnmacro macro?
For this, I just use defn. For example, this macro is like defn, but
also takes a function as the second argument. It composes the body with
function.
(defmacro defnwithfn [name function & body]
`(let [vr# (defn ~name ~@body)]
(alter-var-root
vr#
(fn [f#]
(fn ~name [& args#]
(apply ~function f# args#))))
vr#))
Basically, you let defn do the work, then fiddle with it after.
Phil
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