isSubnetMask static method

bool isSubnetMask(
  1. String s
)

Implementation

static bool isSubnetMask(String s) {
  if (isEmpty(s) || s.length > 2) {
    return false;
  }
  //Check regex
  RegExp regExp =
      new RegExp(r"^(\d{1,2})$", caseSensitive: false, multiLine: false);
  if (!regExp.hasMatch(s)) {
    return false;
  }
  ;
  if (int.parse(s) < 1 || int.parse(s) > 32) {
    return false;
  }

  return true;
}