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Re: Generality of defvar

From: Emanuel Berg
Subject: Re: Generality of defvar
Date: Wed, 27 Jul 2022 01:16:45 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux)

carlmarcos--- via Users list for the GNU Emacs text editor wrote:

> Have been looking into defvar and noticed the generality of
> its use
> (defvar aname t)
> (defvar bname nil)
> (defvar cname 1)
> (defvar dname "text")

For practical reasons it can be better to do

(defvar var-name)
(setq var-name 'var-value)

instead because if you do something with that and want to
reset it, it's enough to evaluate the second line, whereas if
you just have the first line you tend to evaluate that one and
if/because the variable is already set at that point then
nothing will happen ...

underground experts united

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