public static bool IsPassportIdCorrect(this Passport passport)
{
string passportId = passport.PassportInfo["pid"];
return(Regex.IsMatch(passportId, "^[0-9]{9}$"));
}
public static bool IsEyeColorCorrect(this Passport passport)
{
string eyeColor = passport.PassportInfo["ecl"];
return("amb blu brn gry grn hzl oth".Contains(eyeColor));
}
public static bool IsHairColorCorrect(this Passport passport)
{
string hairColor = passport.PassportInfo["hcl"];
return(Regex.IsMatch(hairColor, "^#[0-9a-f]{6}$"));
}
public static bool ContainsAllMandatoryKeys(this Passport passport)
{
return(MandatoryKeys.TrueForAll(key => passport.PassportInfo.ContainsKey(key)));
}