rotten news relay - comp.lang.lisp - Re: need help w/ `loop'

Subject: Re: need help w/ `loop'
From: B. Pym
Newsgroups: comp.lang.lisp, comp.lang.scheme
Organization: A noiseless patient Spider
Date: Thu, 19 Sep 2024 07:13 UTC

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From: Nobody447095@here-nor-there.org (B. Pym)
Newsgroups: comp.lang.lisp,comp.lang.scheme
Subject: Re: need help w/ `loop'
Date: Thu, 19 Sep 2024 07:13:29 -0000 (UTC)
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> This baffles me:
>
> (loop for i from 0 to 3
> with result = 0
> do
> (incf result i)
> return result)
>
> ==> 0
>
> Why? doesn't the stuff that occurs in the body of the `loop' make a
> difference? What am I missing?

Why didn't you do it this way?

(let ((result 0))
(loop for i from 0 to 3
do (incf result i))
result)

Why does it make worshippers of CL (COBOL-Like) so happy to do
everything inside of LOOP?

Why didn't you believe Paul Graham when he told you that LOOP
is a disaster?

Gauche Scheme:

(rlet1 result 0
(dotimes (i 4) (inc! result i)))

===>
6

Subject	Author
Re: need help w/ `loop'	B. Pym

Write yourself a threatening letter and pen a defiant reply.

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