As others have noted, there are several ways to do calculations (exact, approximate, semi-approximate). Unfortunately, Date::Manip::DM6 (which is basically just an interface that is backward compatible with the older versions of Date::Manip) didn't currently support all of them (since they didn't even exist in older versions of Date::Manip).

The was no reason NOT to support them... I just had never thought to add them (and nobody had requested that). So I just did, and in the next version of Date::Manip, you'll be able to do: 

   my $dtopt= DateCalc($dt1,$dt2,'semi');

[download]

and get what you want. However, that won't work in the current version.

Getting what you want with the current version of Date::Manip::DM6 is harder because in the older module, there were only exact and approximate, and in newer versions there are exact, semi-approximate, and approximate, and it's challenging to get what you want. Really, the best way would be to do that calculation using the OO interface: 

use Date::Manip::Date;
my $date1 = new Date::Manip::Date;
my $date2 = $date1->new_date();
$date1->parse($dt1);
$date2->parse($dt2);
my $delt  = $date1->calc($date2,'semi');
my $delv  = $delt->value();
print "$delv\n";

[download]

In reply to Re: DateCalc using Date::Manip by SBECK
in thread DateCalc using Date::Manip by tsdesai

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