Re: date arithmetic?

[PA <petite.abeille@...>]

On Aug 24, 2005, at 14:01, Luiz Henrique de Figueiredo wrote:

> I'm probably missing something but I think you can simply add the 
> appropriate
> offset to os.time, as in:

I guess the crux of the issue is 'appropriate offset':

March 1, 2005 - 1 month = February 1, 2005
March 28, 2005 - 1 month = February 28, 2005
April 15, 2005 - 1 month = March 15, 2005

What would be the proper value of '1 month'?

In any case, directly manipulating the os.date's table elements seems 
to yield sensible results so far.

FWIW, here is a list of the currently implemented functions:

add, compare, date, dateWithJulianDay, dateWithValues, day, dayDate, 
dayEndDate, dayOfWeek, dayOfYear, equals, hashCode, hour, init, isDST, 
julianDay, minute, month, monthDate, monthEndDate, second, time, 
timeZone, timeZoneOffset, toString, utc, utcDate, week, weekDate, 
weekEndDate, weeksInMonth, year, yearDate, yearEndDate

http://dev.alt.textdrive.com/file/lu/LUDate.lua

Cheers

--
PA, Onnay Equitursay
http://alt.textdrive.com/