[parent not found: <mailman.3210.1114627946.2895.help-gnu-emacs@gnu.org>]
* Re: Simple elisp problem with equal
[not found] <mailman.3210.1114627946.2895.help-gnu-emacs@gnu.org>
@ 2005-04-27 19:05 ` David Kastrup
0 siblings, 0 replies; 8+ messages in thread
From: David Kastrup @ 2005-04-27 19:05 UTC (permalink / raw)
exits funnel <exitsfunnel@yahoo.com> writes:
> Many thanks to David, Peter, Ismael and Thien-Thi.
> One additional question: I'm still a little confused
> about the difference between 'foo and foo.
'foo is the same as (quote foo), foo is a symbol. In an evaluated
context, (quote foo) evaluates to the unevaluated expression (here a
symbol), and the unevaluated symbol evaluates to its symbol-value.
Lists evaluate to a function call.
--
David Kastrup, Kriemhildstr. 15, 44793 Bochum
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: Simple elisp problem with equal
@ 2005-04-27 18:47 exits funnel
2005-04-27 18:59 ` Peter Dyballa
0 siblings, 1 reply; 8+ messages in thread
From: exits funnel @ 2005-04-27 18:47 UTC (permalink / raw)
Cc: help-gnu-emacs
Many thanks to David, Peter, Ismael and Thien-Thi.
One additional question: I'm still a little confused
about the difference between 'foo and foo. I've read
most or all of the stuff in the lisp manual about
symbols. If anyone could provide a pointer to the
relevent info section I'd really apprciate it.
-exits
--- Peter Dyballa <Peter_Dyballa@Web.DE> wrote:
>
> Am 27.04.2005 um 01:35 schrieb exits funnel:
>
> > (equal system-type "gnu/linux")
> >
>
> Since system-type is a symbol, I think its correct
> use is something
> like that:
>
> (string= (symbol-name system-type) "gnu/linux")
>
> I don't know how commutative Elisp is (commutative
> means that (1+2) is
> the same as (2+1)), I've mostly seen statements like
> that:
>
> (string= "gnu/linux" (symbol-name system-type))
>
> --
> Greetings
>
> Pete
>
> "There's no place like 127.0.0.1"
> origin unknown
>
>
__________________________________________________
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^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: Simple elisp problem with equal
2005-04-27 18:47 exits funnel
@ 2005-04-27 18:59 ` Peter Dyballa
0 siblings, 0 replies; 8+ messages in thread
From: Peter Dyballa @ 2005-04-27 18:59 UTC (permalink / raw)
Cc: help-gnu-emacs
Am 27.04.2005 um 20:47 schrieb exits funnel:
> If anyone could provide a pointer to the
> relevent info section I'd really apprciate it.
C-h i m Elisp RET m symbols RET -- or such was the recommendation
Pascal Bourguignon gave me.
--
Greetings
Pete
A common mistake that people make when trying to design something
completely foolproof is to underestimate the ingenuity of complete
fools.
^ permalink raw reply [flat|nested] 8+ messages in thread
* Simple elisp problem with equal
@ 2005-04-26 23:35 exits funnel
2005-04-27 8:03 ` Ismael Valladolid Torres
2005-04-27 8:28 ` Peter Dyballa
0 siblings, 2 replies; 8+ messages in thread
From: exits funnel @ 2005-04-26 23:35 UTC (permalink / raw)
Hello,
I'm trying to add some code to my .emacs which will
allow me to share the file across my windows and linux
boxes. To make a long story short, I want this:
(equal system-type "gnu/linux")
to evaluate to true but instead it evaluates to nil.
C-h v system-type indicates its value is "gnu/linux".
I've spent a fair amount of time reading the lisp
manual which has been very informative, but I still
can't get this simple issue sorted out :)
One other (less important) question. Why does:
(princ system-type)
evaluate to "gnu/linuxgnu/linux" rather than just
"gnu/linux"?
Thanks in advance for any replies.
-exits
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^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: Simple elisp problem with equal
2005-04-26 23:35 exits funnel
@ 2005-04-27 8:03 ` Ismael Valladolid Torres
2005-04-27 8:28 ` Peter Dyballa
1 sibling, 0 replies; 8+ messages in thread
From: Ismael Valladolid Torres @ 2005-04-27 8:03 UTC (permalink / raw)
exits funnel escribe:
> I'm trying to add some code to my .emacs which will
> allow me to share the file across my windows and linux
> boxes.
(when (eq system-type 'windows-nt) (...))
(when (eq system-type 'gnu/linux) (...))
These snippets in my .emacs do the job lovely in both W2K and Linux.
Cordially, Ismael
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: Simple elisp problem with equal
2005-04-26 23:35 exits funnel
2005-04-27 8:03 ` Ismael Valladolid Torres
@ 2005-04-27 8:28 ` Peter Dyballa
1 sibling, 0 replies; 8+ messages in thread
From: Peter Dyballa @ 2005-04-27 8:28 UTC (permalink / raw)
Cc: help-gnu-emacs
Am 27.04.2005 um 01:35 schrieb exits funnel:
> (equal system-type "gnu/linux")
>
Since system-type is a symbol, I think its correct use is something
like that:
(string= (symbol-name system-type) "gnu/linux")
I don't know how commutative Elisp is (commutative means that (1+2) is
the same as (2+1)), I've mostly seen statements like that:
(string= "gnu/linux" (symbol-name system-type))
--
Greetings
Pete
"There's no place like 127.0.0.1"
origin unknown
^ permalink raw reply [flat|nested] 8+ messages in thread
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2005-04-27 0:54 ` Simple elisp problem with equal David Hansen
2005-04-27 1:00 ` Thien-Thi Nguyen
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2005-04-27 19:05 ` David Kastrup
2005-04-27 18:47 exits funnel
2005-04-27 18:59 ` Peter Dyballa
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2005-04-26 23:35 exits funnel
2005-04-27 8:03 ` Ismael Valladolid Torres
2005-04-27 8:28 ` Peter Dyballa
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