[Boost-users] Date calculations with exclusions

From: kingos_at_[hidden]
Date: 2006-08-31 22:51:07

 ('binary' encoding is not supported, stored as-is)
Hi, 

I am hoping to use boost::date_time to do some date calculations. What I want to do is
basically work out the number of days to a given date with various exclusions applied.

eg.

How many working days are there to christmas?

using namespace boost::gregorian;

int CalculateDaysToChristmas()
{
        date_period someHoliday(date(2006, Dec, 01), date_duration(1));

    date today(2006, Sep, 1);

    date christmas(2006, Dec, 25);

    int days = 0;
    for (day_iterator i = today; i != christmas; ++i)
    {
        if (is_weekday(*i) && !someHoliday.contains(*i))
            ++days;
    }

    return days;
}

However, I can't find a simply way to work out is_weekday ...
Secondly, is there some way to put every sunday in as a date_period? 
Thirdly, this doesn't seem very optimal ... is there a better way of doing this?

Thanks,
Andrew