29 Avr
2007
29 Avr
'07
07:23
hi
Is there a way to return "nothing"? so that : (list nothing 1 2 3 nothing 4 5 6) ; => (1 2 3 4 5 6)
I asked the same question on "comp.lang.scheme", but someone says it can't be done. Is this true?
;; (list (if (> 1 2) 3) (if (> 1 2) 3 nil)) ; -> (#!void ())
both "void" and '() are not exactly the same as "absolutely nothing". It would helps a lot if I can code something like that.
Thanks.