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Re: Calling a function with undefined symbol
From: |
tomas |
Subject: |
Re: Calling a function with undefined symbol |
Date: |
Mon, 31 Oct 2022 10:07:09 +0100 |
On Mon, Oct 31, 2022 at 08:57:09AM +0000, Heime wrote:
> ------- Original Message -------
> On Monday, October 31st, 2022 at 8:42 AM, <tomas@tuxteam.de> wrote:
[...]
> Then, how is it that (symbol-value 'seqr) returns 5? There seems to be
> a symbol and symbol-value returns 5.
Please: read the docs yourself. Others can't do that for you.
Specifically "12.7 Accessing Variable Values" in the Emacs Lisp
manual.
That a "symbol" has a "value" is just a shorthand notation for
"a symbol" has "a value" associated to it via a variable. It can
also have other things associated to it (a function, for example,
also a property list). But it needn't, it can just exist on its
own.
> Yes, I have got really confused about what symbols are exactly. Even
> after reading several times. I have never seen anybody make a symbol,
> only variables. So, what is a symbol?
'foo (spedifically this coaxes the reader into creating one. The
function behind that is intern. See there.
Cheers
--
t
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- Calling a function with undefined symbol, Heime, 2022/10/31
- Re: Calling a function with undefined symbol, Jean Abou Samra, 2022/10/31
- Re: Calling a function with undefined symbol, tomas, 2022/10/31
- Re: Calling a function with undefined symbol, Heime, 2022/10/31
- Re: Calling a function with undefined symbol,
tomas <=
- Re: Calling a function with undefined symbol, Jean Abou Samra, 2022/10/31
- Re: Calling a function with undefined symbol, Heime, 2022/10/31
- Re: Calling a function with undefined symbol, Jean Abou Samra, 2022/10/31
- Re: Calling a function with undefined symbol, Heime, 2022/10/31
- RE: [External] : Re: Calling a function with undefined symbol, Drew Adams, 2022/10/31
- Re: [External] : Re: Calling a function with undefined symbol, Emanuel Berg, 2022/10/31
Re: Calling a function with undefined symbol, Stefan Monnier, 2022/10/31
Re: Calling a function with undefined symbol, Emanuel Berg, 2022/10/31