But for "applyv" you could do this:

(*reduce + *(*map *(*comp eval list*) (*cycle *[*+ -*]) (*range 1 10*)))

On Thu, Nov 13, 2014 at 10:06 PM, Robert Levy <r.p.l...@gmail.com> wrote:

> Is that any more elegant than Dave's (reduce + (map * (cycle [1 -1])
> (range 1 n))) though?  I would say that's the best actually sensible
> answer proposed in this thread.
>
> On Thu, Nov 13, 2014 at 9:54 PM, Andy L <core.as...@gmail.com> wrote:
>
>>
>>
>> On Thu, Nov 13, 2014 at 7:23 PM, Robert Levy <r.p.l...@gmail.com> wrote:
>>
>>> You don't need this for numbers over 900 right?
>>>
>>>
>> I see what you mean. But no, I just practice and try to capture patterns.
>> So, going after your example I got following:
>>
>> (reduce + (map applyv (cycle [+ -]) (range 1 10)))
>>
>> where something like applyv perhaps exists,
>> (defn applyv [f a] (f v)) - but I am not sure how to find it.
>>
>> A.
>>
>>
>>
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