isAvailableCharacter static method
Implementation
static bool isAvailableCharacter(int? charCode) {
if (charCode != null && charCode == charUnderscore ||
(charCode! >= 48 && charCode <= 57) ||
(charCode >= 65 && charCode <= 90) ||
(charCode >= 97 && charCode <= 122)) {
return true;
}
return false;
}