From: Noam Postavsky <npostavs@gmail.com>
To: Plamen Tanovski <pgt@tanovski.de>
Cc: Help Gnu Emacs mailing list <help-gnu-emacs@gnu.org>
Subject: Re: Precedence of for clauses in cl-loop
Date: Fri, 7 Sep 2018 07:16:36 -0400 [thread overview]
Message-ID: <CAM-tV--PEeDNsmHsRLOsVESxpXuFyhYoJutP=KfO901nxcowXw@mail.gmail.com> (raw)
In-Reply-To: <20180907070834.E7B4B3381CF@munka.dynalias.org>
On 7 September 2018 at 03:08, Plamen Tanovski <pgt@tanovski.de> wrote:
> gives error, beacuse the z part is executed before the y line:
>
> (cl-loop
> for x in (number-sequence 1 10)
> for y = (1+ x)
> for z in (elt (number-sequence 1 10) y))
This example also gives an error:
(cl-loop
for x in (number-sequence 1 10)
for z in (elt (number-sequence 1 10) (1+ x)))
because a `for VAR in LIST' clause evaluates LIST just once before the
loop starts.
The "treated sequentially" in the manual refers to the assignment of
VAR. For example, this gives an error:
(cl-loop
for y = (1+ x)
for x in (number-sequence 1 10))
And this does not:
(cl-loop
for x in (number-sequence 1 10)
for y = (1+ x))
next prev parent reply other threads:[~2018-09-07 11:16 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-06 18:33 Precedence of for clauses in cl-loop Plamen Tanovski
2018-09-06 22:43 ` Noam Postavsky
2018-09-07 7:08 ` Plamen Tanovski
2018-09-07 11:16 ` Noam Postavsky [this message]
2018-09-07 12:35 ` Plamen Tanovski
2018-09-08 1:37 ` Noam Postavsky
[not found] ` <mailman.511.1536370625.1284.help-gnu-emacs@gnu.org>
2018-09-08 14:41 ` Udyant Wig
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