[slime-devel] Re: the slime inspector
Pascal J.Bourguignon
pjb at informatimago.com
Mon Sep 13 14:54:52 UTC 2004
Martin Simmons writes:
> >>>>> On Mon, 13 Sep 2004 09:14:19 +0200, "Pascal J.Bourguignon" <pjb at informatimago.com> said:
>
> Pascal> Peter Seibel writes:
> >> > - figure out how to distinguish between a defvar/defparameter and
> >> > defcontstant symbol.
>
> Pascal> This should be implementation dependant.
>
> >> How about CONSTANTP?
>
> Pascal> CONSTANTP does not do what you think!
>
> Pascal> [22]> (defvar x 1)
> Pascal> X
> Pascal> [23]> (defvar c 1)
> Pascal> C
Ooooops. I thought really very strongly DEFCONSTANT, but I forgot to
activate the telephatic module of my computer :-(
[32]> (defconstant c 1)
C
[33]> (constantp 'c)
T
[34]> (constantp 'x)
NIL
> Is the above really the output from a running Common Lisp, with CONSTANTP
> returning both T and NIL for the symbol X? Was C supposed to be DEFCONTSTANT?
>
> Maybe you didn't type what you think :-)
Indeed. Sorry. So CONSTANTP can be used.
--
__Pascal Bourguignon__ http://www.informatimago.com/
Our enemies are innovative and resourceful, and so are we. They never
stop thinking about new ways to harm our country and our people, and
neither do we.
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