2009/11/27 Rob Coops <rco...@gmail.com>:
> On Fri, Nov 27, 2009 at 5:43 AM, raphael() <raphael.j...@gmail.com> wrote:
>>
>> HOW CAN I COUNT ELAPSED DAYS ?
>>
>> I tried in localtime() days value like
>>
>> my @array_date = localtime();
>> my $current_dayofyear = @array_date[7];
>>
>>
>> But this would break on New year as "$current_dayofyear" would be reset.
>>
>>
>> SO HOW CAN I COUNT ELAPSED DAYS IF THE DATE FORMAT IS  01.01.2009?
>>
>
>
> Hi,
>
> This is a very old problem pretty much every single programmer has bumped
> into this one... So looking on CPAN <http://search.cpan.org> should be able
> to provide you literally tens of modules used for date calculations in all
> sorts and forms. I would advise having a look at Date::Manip which I found
> very helpful for these kinds of problems. But if you are stubborn and like
> to reinvent the wheel that is no problem of course but might be a little
> more difficult...

I don't want to be controversial but I attended a Perl course this
week where the tutor came down firmly in the DataTime camp. It has
it's own site (http://datetime.perl.org/) as well as providing all the
features of Date::Calc (my favourite) and Date::Manip in a unified
manor.

In the case above you would create a Duration object
(http://search.cpan.org/~drolsky/DateTime-0.51/lib/DateTime/Duration.pm)
and apply that to you existing DataTime object.

HTH,
Dp.

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