std-isdigit | ![]() |
STD-ISDIGIT
if the given argument is a string of one character (length 1) or a positive integer number and the character representation is a numeric character (0-9)
Corresponding Common Lisp name: digit-char-p
ch: any valid lisp expression
T or nil.
None.
(std-require 'STDSTR)
Defined in STDSTR