Looks like a good addition for 4clojure.
On Jul 19, 2012 8:36 PM, "Alan Malloy" <a...@malloys.org> wrote:
> No, but it's pretty easy to write:
>
> (defn map-depth [f coll depth]
> (if (zero? depth)
> (map f coll)
> (for [x coll]
> (map-depth f x (dec depth)))))
>
> On Tuesday, July 17, 2012 7:17:19 PM UTC-7, Seth Chandler wrote:
>>
>> I'm new both to Clojure and to this group, so please be gentle. I come
>> to Clojure mostly from a Mathematica background, which has a certain
>> Lispyness to it. One of the things one can do in Mathematica is to map a
>> function to an s-expression but not at its top level, but rather at some
>> user specified level. Thus Map[f, {{a,b},{c,d}},{2}] will (because of the
>> {2} as the last argument) evaluate to {{f[a],f[b]},{f[c],f[d]}} rather than
>> {f[{a,b}],f[{c,d}]}. I have found this capability of having functions that
>> work at levels of an expression to be extremely valuable. Is there work
>> already done that extends the higher order functions to permit something
>> like this. And, yes, I am sure one could write a macro and perhaps that
>> has already been done, but I was curious as to what was out there. My
>> Google search did not yield much on this topic, but perhaps I used the
>> wrong Clojure vocabulary.
>>
>> Thanks
>>
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