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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