From: Michael Guterl <mguterl@...>
Date: 2006-09-19T10:40:07+09:00
Subject: Re: Date/Time Range

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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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