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Article #402

Re: [Q] various questions

#402
From: KURODA Hisao
Date: Mon, 22 Feb 1999 00:00
50 lines
2144 bytes
kate@pfu.co.jp (KATAYAMA Yoshio) writes:

> (setq a '(defun foo ()
> 	   (let ((foobar '(a)))
> 	     foobar)))
> (eval a)
> (rplacd (foo) 'b)
> 
> ใ‚’ใŠใ“ใชใ†ใจใ€a ใฎๅ€คใฏใ€
> 
> (defun foo nil (let ((foobar (quote (a . b)))) foobar))
> 
> ใซใชใ‚Šใพใ™ใ‹ใ‚‰ใ€(eval a) ใงใฏๆˆปใ‚Šใพใ›ใ‚“ใ€‚

ใชใ‚‹ใปใฉใ€‚ใใ†ใ„ใ†ๆ„ๅ‘ณใงใ™ใ‹ใ€‚ใ‚ใ‚ŠใŒใจใ†ใ”ใ–ใ„ใพใ™ใ€‚

ใ—ใ‹ใ—ใชใŒใ‚‰ใ‚ใŸใ—ใฎๅ…ƒ่จ˜ไบ‹ใงใ€

KURODA Hisao <kuroda@msi.co.jp> writes:

> > (defun foo ()
>     (let ((foobar '(a)))
>       foobar))
> foo
> 
> > (rplacd (foo) 'b)
> b
> 
> > (foo)
> (a . b)
> ------------------------------------------------------------------------
> 
> ใ‚‚ใกใ‚ใ‚“ใ€(defun foo ...) ใ‚’ใ‚‚ใ†ไธ€ๅบฆ่ฉ•ไพกใ—ใฆใ‚„ใ‚Œใฐ(foo)ใฎ่ฟ”ใ™ๅ€คใฏๅ…ƒใซๆˆป
> ใ‚Šใพใ™ใ€‚ไธŠใซ็ถšใ‘ใฆใ€

ใจใ‚ใ‚Šใ€(defun foo ...)ใ‚’ใ‚‚ใ†ไธ€ๅบฆ่ฉ•ไพกใ™ใ‚‹ใ€ใจใฏใ€

(defun foo ()
 (let ((foobar '(a)))
   foobar))

ใ‚’่ฉ•ไพกใ™ใ‚‹ใ“ใจใฎๆ„ๅ‘ณใงๆ›ธใใพใ—ใŸใ€‚
ใ“ใฎไป–ใซ่งฃ้‡ˆใŒใ‚ใ‚‹ใ‚ˆใ†ใซใฏๆ€ใˆใชใ„ใฎใงใ™ใŒโ€ฆ

็‰‡ๅฑฑใ•ใ‚“ใฎไพ‹ใงใ™ใจใ€(defun foo ...)ใ‚’่ฉ•ไพกใ—ใฆใ„ใ‚‹ใฎใงใฏใชใใ€
ใ‚ใใพใงaใ‚’่ฉ•ไพกใ—ใฆใ„ใ‚‹ใ“ใจใซใชใ‚‹ใจๆ€ใ„ใพใ™ใ€‚

;;; $Id: .signature,v 1.3 1996/09/20 07:06:26 kuroda Exp $
(define (ใใ‚ใ  ใฒใ•ใŠ)
  (email kuroda@msi.co.jp))
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From: KURODA Hisao <kuroda@msi.co.jp>
Subject: Re: [Q] various questions
Date: 1999/02/22
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