From: Kevin Olbrich <devlists-ruby-talk@...>
Date: 2006-09-19T11:01:54+09:00
Subject: Re: Date/Time Range


On Tuesday, September 19, 2006, at 10:40 AM, Michael Guterl wrote:
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>On 9/18/06, Kevin Olbrich <devlists-ruby-talk@devlists.com> wrote:
>>
>>
>> On Tuesday, September 19, 2006, at 3:40 AM, Michael Guterl wrote:
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>> >It seems that every time I implement a class in Ruby I later find out
>> >someone has already done a much better job than myself.
>> >
>> >So before I take the time to implement a TimeRange class myself, I
>> thought
>> >I'd ask if there was anything out there similar.
>> >
>> >I'd like to be able to do something like the following:
>> >
>> >>> start_date = Time.parse "9/1/2006"
>> >>> end_date = Time.parse "9/2/2006"
>> >
>> >>> r = TimeRange.new(start_date, end_date)
>> >
>> >>> r.each_hour do |hour|
>> >>>   ...
>> >>> end
>> >
>> >>> r.each_day do |day|
>> >>>   ...
>> >>> end
>> >
>> >>> r.each(1800) do |half_hour|
>> >>>   ..
>> >>> end
>> >
>> >Any suggestions are welcome.
>> >
>> >Thanks,
>> >Michael Guterl
>> >
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>> >
>>
>> Hmmm.. strange that you should ask.
>>
>> a = Time.now
>>
>> (Unit('0 h')..Unit('10 h')).map {|hour|a + hour}
>>
>> [Mon Sep 18 20:53:30 EDT 2006, Mon Sep 18 21:53:30 EDT 2006, Mon Sep 18
>> 22:53:30 EDT 2006, Mon Sep 18 23:53:30 EDT 2006, Tue Sep 19 00:53:30 EDT
>> 2006, Tue Sep 19 01:53:30 EDT 2006, Tue Sep 19 02:53:30 EDT 2006, Tue
>> Sep 19 03:53:30 EDT 2006, Tue Sep 19 04:53:30 EDT 2006, Tue Sep 19
>> 05:53:30 EDT 2006, Tue Sep 19 06:53:30 EDT 2006]
>>
>> To do this, you need to use the 'ruby-units-0.2.1' gem.
>> I'm putting a few finishing touches on it, but it should be available
>> later tonight.  There are also a bunch of handy time helper functions as
>> well.
>>
>> PS.  Works with seconds, minutes, hours, days, weeks, fortnights, years,
>> etc..
>> The range version requires that the interval be integers, so you would
>> have to use another looping structure for 15-min or 30-min intervals.
>>
>> _Kevin
>>
>>
>>
>>
>> _Kevin
>> www.sciwerks.com
>>
>> --
>> Posted with http://DevLists.com.  Sign up and save your mailbox.
>>
>> Perfect!  This should do exactly what I was looking for.
>
>Thanks!
>Michael Guterl
>
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I just uploaded the gem to rubyforge.  Allow some time for propogation.

_Kevin
www.sciwerks.com

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