On Tue, Apr 13, 2010 at 11:54 AM, Douglas Philips <d...@mac.com> wrote:

> On 2010 Apr 12, at 10:48 PM, Glen Rubin wrote:
>
>> I am working with a collection of integer sequences ...(e.g.
>> coll:
>> ((3 7 3 5 9 2 0 8 4 0 1 2323 4 11...) (243 4 664 478 3948...) (6 3 7 4
>> 3335 2 4 5 7 6...)...)
>>
>> I want to create an average sequence such that all of the first
>> elements are averaged, all of the second elements, etc....
>>
>> However, I am unable to manipulate the collection.  If I try something
>> simple like:
>>
>> (map + coll)
>>
>> I get java.lang.ClassCastException
>>
>
> Take a look at apply, it sounds as if you want something akin to:
> (apply map + coll)
>
> --Doug


Or maybe?
Further help lurking in Clojure IRC. ;)

user=> (use '[clojure.contrib.seq-utils :only (flatten)])
nil
user=> (map + (flatten '((1 2 3) (4 5 6))))
(1 2 3 4 5 6)


-- TheBusby

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