From: Drew Adams <drew.adams@oracle.com>
To: Christopher Dimech <dimech@gmx.com>,
Help Gnu Emacs <help-gnu-emacs@gnu.org>
Subject: RE: Symbol Properties having global context
Date: Sun, 6 Dec 2020 12:13:54 -0800 (PST) [thread overview]
Message-ID: <67c408b0-4ae4-41be-a766-413f336f10e8@default> (raw)
In-Reply-To: <trinity-31abcba5-5d65-4b52-a1dc-629a35bd10ad-1607285354002@3c-app-mailcom-bs11>
> Am reading the section "9.4 Symbol Properties". The section that not
> say that
> symbol properties such as "value" have a global context.
It is symbols themselves that are global objects.
It follows that their property values are also.
(Of course, a Lisp value can be shared.)
Symbols are stored in obarrays. By default, they
are stored in the obarray that is the value of
global variable `obarray'.
So you can have two symbols with the same name
(the name is just one of a symbols properties,
its `symbol-name'), but which have different
values for other properties, such as
`symbol-value'.
E.g., you can have two symbols `foo', in two
different obarrays, with two different values
when used as a variable. (They can also have
different `symbol-function' value, etc.)
next prev parent reply other threads:[~2020-12-06 20:13 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-06 20:09 Symbol Properties having global context Christopher Dimech
2020-12-06 20:13 ` Drew Adams [this message]
2020-12-06 20:25 ` Christopher Dimech
2020-12-06 23:01 ` Drew Adams
2020-12-06 23:20 ` Christopher Dimech
2020-12-06 23:52 ` Michael Heerdegen
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