From: Rob Redmon <rob.webinator@...>
Date: 2009-04-30T04:03:04+09:00
Subject: Finding Matches in Array of Classes


I have an ActiveRecord find result.  An element's contents look like:

irb(main):090:0> results[0]
=> #<InventoryHour id: 47475, observation_time: "2008-01-01 00:00:00",
station_id: 6, extension_id: 22, disk: 4, archive: 0, updated_on:
"2009-04-15 15:57:16">

The class of "observation_time" is:
results[0].observation_time.class
=> Time


What I'd like to do is find those elements which match on a particular
range of "observation_time".  I'm used to Matlab and IDL programming
where one just does something like this:

indices = where( results.observation_time >= "2008-1-1" and
results.observation_time < "2009-1-1" )

What's the ruby way?  Obviously, I can't use Array.include? but
something like that would be nice.

Rob
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