RetroBBS - comp.lang.lisp - .Re: MAP (and variants) vs LOOP

.Re: MAP (and variants) vs LOOP - Popular opinion observation?

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https://www.rocksolidbbs.com/devel/article-flat.php?id=16995&group=comp.lang.lisp#16995

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From: No_spamming@noWhere_7073.org (Robert L.)
Newsgroups: comp.lang.lisp
Subject: .Re: MAP (and variants) vs LOOP - Popular opinion observation?
Date: Wed, 23 Mar 2022 23:03:56 -0000 (UTC)
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by: Robert L. - Wed, 23 Mar 2022 23:03 UTC

Pascal Costanza wrote:

> different kinds of values. Recently, I needed the following costruct
> quite often:
>
> (loop for x in some-list
> for i from 0
> collect `(,x ,i))
>
> This enumerates all elements in a list. You would have to express this
> completely manually without LOOP because none of the mapxyz functions
> help you here.

Obviously wrong.

Gauche Scheme (using lazy iota):

(map list '(b c d) (liota))

===>
((b 0) (c 1) (d 2))

Your computer account is overdrawn. Please see Big Brother.

devel / comp.lang.lisp / .Re: MAP (and variants) vs LOOP - Popular opinion observation?

Subject	Author
.Re: MAP (and variants) vs LOOP - Popular opinion observation?	Robert L.