address@hidden writes:
On Sat, Jul 22, 2006 at 11:19:28AM -0500, Jon Wilson wrote:
Hi,
Is there a good way to determine the number of arguments that a given
procedure will take?
Here's a fishing rod ;-)
| address@hidden:~$ guile
| guile> (apropos "arity")
| (ice-9 session): arity #<procedure arity (obj)>
| guile> (arity apropos)
| 1 or more arguments: `rgx', the rest in `options'.
| guile>
And if you're not keen on parsing arity's output, see its definition
in (ice-9 session) for the procedure properties that it queries to
produce this.
Also, on an unrelated note, is it possible to define values (as in (lambda
() (values 1 2)) ) in terms of McCarthy's original seven lisp primitives?
Or would this question be better asked somewhere else (like c.l.scheme)?
Yes, sounds to me like a question for c.l.scheme.
Regards,
Neil