From: ALBINALI4
Subject: scope - live
Date: Mon, 28 Jan 2002 06:58:10 +0000
Message-ID: <20020128015810.25009.00000718@mb-cf.aol.com>

Hi,
  How can a variable in LISP be live but not in scope?

Thanks.
Fahd

• Re: scope - live Vladimir Zolotykh
• Re: scope - live Rahul Jain

From: Vladimir Zolotykh
Subject: Re: scope - live
Date: Mon, 28 Jan 2002 08:23:28 +0000
Message-ID: <3C550A80.D48BC13E@eurocom.od.ua>

All variables introduced with defconstant, defvar, defparameter
have indefinite scope and indefinite extent. E.g. could be seen
anywhere and are alive while someone could reference it.

Also possible to have variables that could be seen being not in 
scope in the following way

  (let ((*foo* 1))
    (declare (special *foo*))
    (bar))

  (defun bar ()
    (print *foo*))

ALBINALI4 wrote:
> 
> Hi,
>   How can a variable in LISP be live but not in scope?
> 
> Thanks.
> Fahd

-- 
Vladimir Zolotykh                         ······@eurocom.od.ua

From: Rahul Jain
Subject: Re: scope - live
Date: Wed, 30 Jan 2002 06:17:04 +0000
Message-ID: <87bsfc4b33.fsf@photino.sid.rice.edu>

·········@aol.com (ALBINALI4) writes:

> Hi,
>   How can a variable in LISP be live but not in scope?


It could be local to a function that isn't the "innermost" on the
execution stack. That is, if you mean a reasonable Lisp like Common
Lisp and not LISP 1.5.

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