stringAlphaNumeric method
Generate random string by alphanumeric.
For alpha lowercase uppercase included.
Implementation
String stringAlphaNumeric(int length) {
const chars =
"AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz1234567890";
return string(chars, length);
}