isPassengerSequence method

dynamic isPassengerSequence(
  1. String s
)

format: "101", "102", "103" it's a number up to 1000

Implementation

isPassengerSequence(String s) {
  s = s.trim();
  if (isNumeric(s) && s.length < 4) {
    int i = int.parse(s);
    if (i <= 1000) return true;
  }
  return false;
}