public static Period Parse(string str)
{
Match match = ParseRegex.Match(str);
if (!match.Success)
throw new ArgumentException();
Period result = new Period();
string dayofweekStr = match.Groups[1].ToString();
result.DayOfWeek = dayofweekStr == "" ? 0 : int.Parse(dayofweekStr);
string timeStr = match.Groups[2].ToString();
result.Time = timeStr == "" ? 0 : int.Parse(timeStr);
result.WeekStr = match.Groups[3].ToString();
result.Week = ParseWeek(result.WeekStr);
return result;
}
public bool ConflictWith(Period other)
{
if (DayOfWeek == 0 || other.DayOfWeek == 0)
return false;
return DayOfWeek == other.DayOfWeek && Time == other.Time && (Week & other.Week) != 0;
}