Funnily enough, I've just found and been playing with NSCalendarDate
and was unaware of the discouragement of using this class until now,
thanks Jens. But it's not deprecated *yet*
From the docs:
Important: Use of NSCalendarDate strongly discouraged. It is not
deprecated yet, however it may be in the next major OS release after
Mac OS X v10.5. For calendrical calculations, you should use suitable
combinations of NSCalendar, NSDate, and NSDateComponents, as described
in Calendars in Dates and Times Programming Topics for Cocoa.
JJ
On 01/07/2008, at 1:14 AM, Jens Alfke wrote:
On 30 Jun '08, at 12:29 AM, David Arve wrote:
sqlite3_bind_int(sql_statement, 1, one_week);
Shouldn't that be sqlite3_bind_double? The variable one_week is
declared as double, and I'm pretty sure that seconds-since-1970
intervals are soon going to overflow a (signed) 32-bit int, if they
haven't already.
Is there a better way for me to get e.g. the dates from my database
from
this week, this month etc.?
Look at "Calendars" in the "Date & Time Programming Guide For
Cocoa", which describes how to do manipulations with calendar dates.
In a nutshell, you can find the beginning of the week by getting the
current date/time, then breaking it into components and setting the
day-of-week plus hour/minute/second to zero, then converting back to
NSDate. Then you can call -timeIntervalSince1970.
(I'd give you an example, but my own code that does this uses the
deprecated NSCalendarDate class. I haven't used NSCalendar myself,
yet.)
—Jens_______________________________________________
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