On Fri, Mar 2, 2012 at 10:06 PM, Rich Bowen <rbo...@rcbowen.com> wrote:
>
>
>
> On Mar 1, 2012, at 17:14, <jonathan.pey...@ubs.com> wrote:
>
> > If the date for $dt is 20120229, the following produces an error!
> >
> > $dt->set_year($dt1->year + 1);
> >
> > Invalid day of month (day = 29 - month = 2)
> > at /sbcimp/run/pd/cpan/5.8.8-2006.03/lib/DateTime.pm line 170
> > DateTime::new('undef', 'hour', 0, 'second', 0, 'month', 2, 'locale',
> 'DateTime::Locale::en_US=HASH(0x8e15400)', ...) called at
> /sbcimp/run/pd/cpan/\
> >
> > 5.8.8-2006.03/lib/DateTime.pm line 1507
> > DateTime::set('undef', 'year', 2013) called at
> /sbcimp/run/pd/cpan/5.8.8-2006.03/lib/DateTime.pm line 1514
> >
> Yeah. That was the subject of days of discussion as to what the right
> thing to do here was. Leap years are hard. This is what we decided was the
> right thing to do here.
>
> --
> Rich Bowen, mobile edition
The problem is pretty much identical to adding 1 month to a month with more
days than the next (i.e. any month with 31 days except January and July).
The behaviour should be the same, which it is.
Regards
Myfanwy White
