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From: Clinton Ebadi <clinton@unknownlamer.org>
To: "Maciek Godek" <pstrychuj@gmail.com>
Cc: guile-user@gnu.org
Subject: Re: Me no understand scoping
Date: Thu, 31 Jul 2008 19:48:47 -0400	[thread overview]
Message-ID: <874p657gyo.fsf@unknownlamer.org> (raw)
In-Reply-To: <e2ceda030807311221i7cc6fb11g3c1a04e41d8813b6@mail.gmail.com> (Maciek Godek's message of "Thu\, 31 Jul 2008 21\:21\:42 +0200")

"Maciek Godek" <pstrychuj@gmail.com> writes:

> Neil Jerram <neiljerram@googlemail.com>:
>
>>> How to achieve this effect without using eval?
>>> (I've tried (+ . l) but it didn't work out)
>>
>> (apply + l)
>
> Correct :)
> Here comes another one:
> Suppose I want to define a variable, but I don't know its name
> -- it is contained in another variable. For example:
> (define a 'b)
> I want to assign a value to the symbol "contained" in a.
> (that would be b in this example). The problem is that "define"
> quotes its first argument. How to achieve it?

module-define! MODULE NAME VALUE

e.g. 
(let ((foo 'bar))
 (module-define! (current-module) foo 5)
 bar)
=> 5

Issue: this will be a top level binding, but a solution using `eval'
would also produce a top level binding (as it executes there to allow
lexical environments to be optimized...).

Doing such things, however, is fairly unschemey.

-- 
emacsen: every copy of Emacs comes with a bag of pot and 5 hits of acid
emacsen: and a hotel coffee maker




  parent reply	other threads:[~2008-07-31 23:48 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-07-29 21:18 Me no understand scoping Maciek Godek
2008-07-30  3:24 ` Clinton Ebadi
2008-07-30  8:42   ` Maciek Godek
2008-07-30 14:03     ` Jon Wilson
2008-07-30 15:04       ` Klaus Schilling
2008-07-30 19:24       ` Maciek Godek
2008-07-31  7:20         ` Neil Jerram
2008-07-31 19:21           ` Maciek Godek
2008-07-31 21:37             ` Neil Jerram
2008-07-31 23:07               ` Maciek Godek
2008-08-02 17:43                 ` Neil Jerram
2008-08-02 21:36                   ` Maciek Godek
2008-08-08 20:54                     ` Neil Jerram
2008-08-10 21:49                       ` Maciek Godek
2008-08-09 11:05                     ` Andy Wingo
2008-08-10 22:30                       ` Maciek Godek
2008-09-11 14:56                       ` JonWilson
2008-07-31 23:48             ` Clinton Ebadi [this message]
2008-08-01 22:00               ` Maciek Godek
2008-08-02  5:13                 ` Jon Wilson
2008-08-02 21:35                   ` Maciek Godek
     [not found] <cmu-lmtpd-29005-1217434291-0@mail-imap1.uio.no>
2008-07-30 16:18 ` Kjetil S. Matheussen
2008-07-30 19:03   ` Clinton Ebadi

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