Bug #110333 for Genealogy-Gedcom-Date: Comparing dates

Mon Dec 14 12:32:18 2015 NHORNE [...] cpan.org - Ticket created

Subject:

Comparing dates

Is there a way to compare two dates, like DateTime's compare() method?

Mon Dec 14 17:03:13 2015 ron [...] savage.net.au - Correspondence added

Subject:	Re: [rt.cpan.org #110333] Comparing dates
Date:	Tue, 15 Dec 2015 09:02:53 +1100
To:	bug-Genealogy-Gedcom-Date [...] rt.cpan.org
From:	Ron Savage <ron [...] savage.net.au>

Hi Nigel On 15/12/15 04:32, Nigel Horne via RT wrote: Show quoted text

> Mon Dec 14 12:32:18 2015: Request 110333 was acted upon. > Is there a way to compare two dates, like DateTime's compare() method?

I did not plan anything about this, but I've made a note to look into it. -- Ron Savage - savage.net.au

Mon Dec 14 17:03:13 2015 The RT System itself - Status changed from 'new' to 'open'

Sun Dec 20 16:00:15 2015 RSAVAGE [...] cpan.org - Correspondence added

I've had a look at this, and I think the code needs to: o Save the result of unambiguous parses (i.e. the canonical value) in a cache. Date ranges which are unambiguous won't be saved. o Overload 'cmp'. I've never used overload but it seems straightforward. o Declare a compare() method for cmp to call. o This allows the user to do: $date_1 = G::G::D->new(...) $date_2 = G::G::D->new(...) if ($date_1 cmp $date_2){...} I'll revisit this during the next few days. But, what should cmp return? 2 values (== 'v' !=) or 3 (<, ==, >)?

Sun Dec 20 18:56:38 2015 NHORNE [...] cpan.org - Correspondence added

Thanks, this will help with sorting citations in date order in gedcal. I suggest returning a <=> compatible value, thus: date 1 < date 2 => return < 0 date 1 == date 2 => return 0 date 1 > date 2 => return > 0 Show quoted text

> But, what should cmp return? 2 values (== 'v' !=) or 3 (<, ==, >)?

Sun Jan 10 00:59:49 2016 ron [...] savage.net.au - Correspondence added

Subject:	Re: [rt.cpan.org #110333] Comparing dates
Date:	Sun, 10 Jan 2016 16:59:28 +1100
To:	bug-Genealogy-Gedcom-Date [...] rt.cpan.org
From:	Ron Savage <ron [...] savage.net.au>

Hi Nigel I released V 2.05 implementing compare($other_object). It returns a value in the range 0 .. 3 (sic). On 21/12/15 10:56, Nigel Horne via RT wrote: Show quoted text

> Queue: Genealogy-Gedcom-Date > Ticket <URL: https://rt.cpan.org/Ticket/Display.html?id=110333 > > > Thanks, this will help with sorting citations in date order in gedcal. I suggest returning a <=> compatible value, thus: > > date 1 < date 2 => return < 0 > date 1 == date 2 => return 0 > date 1 > date 2 => return > 0

>> But, what should cmp return? 2 values (== 'v' !=) or 3 (<, ==, >)?

> > >

-- Ron Savage - savage.net.au

Mon Feb 15 16:35:25 2016 RSAVAGE [...] cpan.org - Correspondence added

Implemented in V 2.05.

Mon Feb 15 16:35:27 2016 RSAVAGE [...] cpan.org - Status changed from 'open' to 'resolved'