From: Donald Ball <donald.ball@...>
Date: 2008-06-04T05:34:27+09:00
Subject: Re: Commercial Calendar Calculations

On Tue, Jun 3, 2008 at 2:43 PM, James Herdman <james.herdman@gmail.com> wrote:
> I'm interested in doing calculations with a commercial calendar.  For
> example, "Find every 2nd business day of the month for 2008".  I'm feeling a
> little long on how to approach the topic.  Does anyone know of a library I
> could leverage for such a thing (the ability to use said library in Rails is
> a must)?  If not, does anyone have experience that they could share on the
> matter?

The runt gem provides a nice library for working with recurring
events, it's probably got what you're looking for.

Personally, I looked at runt for an event calendar I built sometime
last year, but it didn't end up being useful as I needed to be able to
store the events in a relational database and query for matching
events therein. To use runt, I'd have had to hydrate all of the events
whenever I wanted to run a query. That was too slow for my use case,
so I ended up doing it all in sql. I'll be happy to share the details
of that implementation if you're in a similar boat.

- donald