This is not precisely what you are looking for, but I'll offer it as an alternative.

I found the same problem when I was adding support for ISO8601 dates to Date::Manip, and I wanted to find out which fields had been set.

Date::Manip (which will parse all of the ISO8601 dates) has a method (complete) which will tell you what fields were explicitly added, and which are implied. So you end up with: 

   use Date::Manip::Date;
   my $obj = new Date::Manip::Date;
   $obj->parse("2000-06-01-00:00");
   print $obj->value(),"\n";
   print $obj->complete('h'),"\n";
   print $obj->complete('m'),"\n";
   print $obj->complete('s'),"\n";

[download]
prints: 
   2000060100000
   1
   1
   0

[download]
So, if you can't get DateTime to do it, you may want to look at Date::Manip.

In reply to Re: DateTime and ISO8601 by SBECK
in thread DateTime and ISO8601 by philkime

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