Depends if you need a closure. There are times I do 2D mappings, and
I have to write something like
(map (partail map #(do-work %)) coll).
Or I have to compose my mapping operations.
for is awesome when you need some of the other built-ins, like :while
Sean
On Dec 17, 12:39 pm, Erik Price <erikpr...@gmail.com> wrote:
> On Thu, Dec 17, 2009 at 12:16 PM, Konrad Hinsen
>
> <konrad.hin...@fastmail.net> wrote:
>
> > On 17 Dec 2009, at 15:44, Sean Devlin wrote:
> > > (defn map-vals [f coll]
> > > (into {} (map (juxt key (comp f val)) coll))
>
> vs:
>
> > (defmethod fmap clojure.lang.IPersistentMap
> > [f m]
> > (into (empty m) (for [[k v] m] [k (f v)])))
>
> Are there any guidelines as to when it's appropriate to use the map
> function vs a list comprehension?
>
> e
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