function generateToken

Source

String generateToken({int length: 50}) {
  var r0 = new Random();
  var buffer = new StringBuffer();
  for (int i = 1; i <= length; i++) {
    var r = new Random(r0.nextInt(0x70000000) + (new DateTime.now()).millisecondsSinceEpoch);
    if (r.nextBool()) {
      String letter = alphabet[r.nextInt(alphabet.length)];
      buffer.write(r.nextBool() ? letter.toLowerCase() : letter);
    } else {
      buffer.write(numbers[r.nextInt(numbers.length)]);
    }
  }
  return buffer.toString();
}