RosettaCodeData/Task/Determine-if-a-string-is-numeric/EchoLisp/determine-if-a-string-is-numeric.l
2023-07-01 13:44:08 -04:00

6 lines
118 B
Common Lisp

(string->number "albert")
#f
(string->number -666)
-666
(if (string->number 666) 'YES 'NO)
YES