Main Index : Reference :
[bool] isalnum([int] char)
char is the character, given in 16 bit Unicode.
isalnum() returns TRUE if char is alphanumeric, that is either a letter or a digit. Otherwise it returns FALSE.
// Outputs "isalnum(5) = 1
// isalnum(a) = 1
// isalnum( ) = 0
// isalnum(!) = 0".
println("isalnum(5) = ",isalnum("5"[0]));
println("isalnum(a) = ",isalnum("a"[0]));
println("isalnum( ) = ",isalnum(" "[0]));
println("isalnum(!) = ",isalnum("!"[0]));