Bill Allombert on Sun, 14 Oct 2012 22:36:59 +0200

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Re: iterators, sums and products

On Thu, Oct 11, 2012 at 10:14:17PM +0200, Loïc Grenié wrote:
>     Hi pari developers,
>     what do you think of the following idea ? Does it look interesting
>   and feasible ?
>     We have a forprime iterator. I've always wished I could sum over
>   primes.
>     My idea is to introduce a new pari type t_ITERATOR which
>   could wrap some iterators (forprime, forsubgroup, forell, etc). For each
>   iterator there would be an initializer. There would also be some
>   users of those iterators: foriter, sumiter, proditer and (why not)
>   vectoriter. Usage:

I miss two things:
and a function that return the sum of the element of a vector.