[REBOL] Re: func args by ladislav
From: joel:neely:fedex at: 16-Oct-2001 12:13
Hi, Romano,
Romano Paolo Tenca wrote:
> Upto here, we agree. Functions have a fixed number of args. Right?
>
No, not AFAICT...
> I don't understand. If the answer is no, functions have always a fixed number
> of args, like i think.
> You think that this is false. So, you should be able to write this kind of
> function. Right?
>
Here's a function with a varying (within bounds) number of args...
zzz: func [a [any-type!] b [any-type!]] [
either value? 'a [
either value? 'b [
print ["Foo with" a "and" b]
][
print ["Foo with just" a]
]
][
print "Just foo!"
]
]
... which behaves as follows ...
>> zzz
Just foo!
>> zzz 1
Foo with just 1
>> zzz 1 2
Foo with 1 and 2
Of course, this is not a completely unbounded number of arguments,
but it is not absolutely fixed.
-jn-
--
This sentence contradicts itself -- no actually it doesn't.
-- Doug Hofstadter
joel<dot>neely<at>fedex<dot>com
