[Jprogramming] Truncating

[Don Guinn]

I gather you are looking for a more general solution than your specific
example. Look at the conjunction "^:" (Power). Raul's solution is perfect
for your example as it turns the question around in such a way that you
can determine your ending condition without going through all the
calculations. "^:" lets you test your previous result  to determine if you
want to continue. This would still be a loop but certainly not in the
traditional form.

On 3/4/07, Geoff Canyon <geoffc at inspiredlogic.com> wrote:
>
> I haven't finished reading the docs yet, so forgive me if this is
> answered someplace: is there a way to terminate the integers function
> based on a calculation? For example, suppose I want to generate all
> the primes < 10,000.
>
> p:i.500
>
> That generates the first five primes, but has no way of knowing
> whether that's enough or too much. I'd like to use something like
>
> p:i._
>
> which would me give me all the primes (to infinity) but then put a
> limit on it so that it stops at a certain point -- in this case, when
> one of the generated primes is about to exceed 10,000.
>
> Is there a way to do that without resorting to a traditional loop?
>
> regards,
>
> geoff
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