* Exercise 3.12 from Intro to lisp manual
@ 2006-03-20 17:53 B. T. Raven
2006-03-20 17:58 ` Bastien
0 siblings, 1 reply; 3+ messages in thread
From: B. T. Raven @ 2006-03-20 17:53 UTC (permalink / raw)
This is my first take on an answer to this problem. The interpreter says
that 'fill-column is void. It seems to me that that the tutorial hasn't
shown how to make 'fill-column visible to the inside of the function.
Dynamic scoping has been mentioned but nothing spelled out, if I am not
mistaken.
(defun chkfc (width)
"Compare current fill column width with arbitrary value."
(interactive "p")
(if (> fill-column width)
(message "Current fill column width %d is greater than %d."
fill-column, width)
(message "Current fill column width %d is less than %d." fill-column,
width)))
What else is needed here?
Thanks,
Ed.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Exercise 3.12 from Intro to lisp manual
2006-03-20 17:53 Exercise 3.12 from Intro to lisp manual B. T. Raven
@ 2006-03-20 17:58 ` Bastien
2006-03-20 23:02 ` B. T. Raven
0 siblings, 1 reply; 3+ messages in thread
From: Bastien @ 2006-03-20 17:58 UTC (permalink / raw)
"B. T. Raven" <ecinmn@peoplepc.com> writes:
> (message "Current fill column width %d is greater than %d."
> fill-column, width)
I don't understand the "," here : is that needed ?
--
Bastien
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Exercise 3.12 from Intro to lisp manual
2006-03-20 17:58 ` Bastien
@ 2006-03-20 23:02 ` B. T. Raven
0 siblings, 0 replies; 3+ messages in thread
From: B. T. Raven @ 2006-03-20 23:02 UTC (permalink / raw)
"Bastien" <bastien@xxx.fr> wrote in message
news:87slpdrob5.fsf@tallis.ilo.ucl.ac.uk...
> "B. T. Raven" <ecinmn@peoplepc.com> writes:
>
> > (message "Current fill column width %d is greater than %d."
> > fill-column, width)
>
> I don't understand the "," here : is that needed ?
>
> --
> Bastien
Thanks, Bastien. I forgot for a short time that the argument separator is
a space. 'fill-column is different from 'fill-column,
Ed
^ permalink raw reply [flat|nested] 3+ messages in thread
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2006-03-20 17:53 Exercise 3.12 from Intro to lisp manual B. T. Raven
2006-03-20 17:58 ` Bastien
2006-03-20 23:02 ` B. T. Raven
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