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Groups > comp.soft-sys.math.maple > #230

Re: Problem with Seq. Delayed Evaluation?

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Thomas Dean <tomdean@speakeasy.org> writes:

> I want to evaluate a Maple function in seq.
>
> seq(add(t,t=factorset(n)),n=1..1000)
>
> If I enter it as typed, I get 1..1000 since add is evaluated one time, I 
> think.  Correct?

No.  I assume you first did

with(numtheory).  I then get

 seq(add(t,t=factorset(n)),n=1..1000);
0, 2, 3, 2, 5, 5, 7, ..., 501, 40, 7

> How do I delay evaluation of add and factorset until in seq?

You shouldn't have to delay them; add and seq have special evaluation
rules, the first argument is not evaluated until after the value of
the index is substituted.

-- 
Joe Riel

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Thread

Problem with Seq.  Delayed Evaluation? Thomas Dean <tomdean@speakeasy.org> - 2011-09-13 19:25 -0500
  Re: Problem with Seq.  Delayed Evaluation? Joe Riel <joer@san.rr.com> - 2011-09-13 19:33 -0700
    Re: Problem with Seq.  Delayed Evaluation? Thomas Dean <tomdean@speakeasy.org> - 2011-09-14 00:26 -0500
      Re: Problem with Seq.  Delayed Evaluation? Joe Riel <joer@san.rr.com> - 2011-09-14 08:20 -0700

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