From: pjb@informatimago.com (Pascal J. Bourguignon)
To: help-gnu-emacs@gnu.org
Subject: Re: System operating detection
Date: Wed, 11 Aug 2010 16:27:11 +0200 [thread overview]
Message-ID: <87k4nx9qdc.fsf@kuiper.lan.informatimago.com> (raw)
In-Reply-To: mailman.1.1281531533.2853.help-gnu-emacs@gnu.org
Andrea Crotti <andrea.crotti.0@gmail.com> writes:
> Thierry Volpiatto <thierry.volpiatto@gmail.com> writes:
>
>> Andrea Crotti <andrea.crotti.0@gmail.com> writes:
>>
>> Use case:
>>
>> ,----
>> | (case system-type
>> | (gnu/linux "Linux")
>> | (window-nt "windows")
>> | (darwin "mac")
>> | (t "other")
>> `----
>>
>>
>>
>>>
>>>
>
> Ah great I didn't know this, so now is
> --8<---------------cut here---------------start------------->8---
> (defconst linux nil)
> (defconst mac nil)
> (defconst win nil)
> (defconst other nil)
>
> (case system-type
> (gnu/linux (setq linux t))
> (window-nt (setq mac t))
> (darwin (setq win t))
> (t (setq other t)))
> --8<---------------cut here---------------end--------------->8---
>
> But maybe could be even better, what if I create the symbol only if
> really needed?
>
> Then I could do
> --8<---------------cut here---------------start------------->8---
> (if (boundp linux)...
> --8<---------------cut here---------------end--------------->8---
> which probably becomes even longer.
> Isn't there a way to automatically define functions or variables?
What if you write simply:
(when (eq system-type 'gnu/linux)
...)
?
or, if you have several cases:
(case system-type
((gnu/linux) (do-something-on-linux))
((mac) (do-something-on-mac))
(otherwise (do-something-standard)))
?
--
__Pascal Bourguignon__ http://www.informatimago.com/
next prev parent reply other threads:[~2010-08-11 14:27 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-11 9:06 System operating detection Andrea Crotti
2010-08-11 9:22 ` Richard Riley
2010-08-11 10:19 ` Andrea Crotti
2010-08-11 11:58 ` Thierry Volpiatto
2010-08-11 12:58 ` Andrea Crotti
[not found] ` <mailman.1.1281531533.2853.help-gnu-emacs@gnu.org>
2010-08-11 14:27 ` Pascal J. Bourguignon [this message]
2010-08-16 21:53 ` Oleksandr Gavenko
[not found] <mailman.3.1281517588.2982.help-gnu-emacs@gnu.org>
2010-08-11 11:13 ` TheFlyingDutchman
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