How Do I Loop Through a Date Range in Reverse?
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by Russ Bradberry
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Published on 2010-05-14T18:51:12Z
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2010/05/14
18:54 UTC
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I have a date range that I would like to be able to loop through in reverse. Give the following, how would I accomplish this, the standard Range operator doesn't seem t be working properly.
>> sd = Date.parse('2010-03-01')
=> Mon, 01 Mar 2010
>> ed = Date.parse('2010-03-05')
=> Fri, 05 Mar 2010
>> (sd..ed).to_a
=> [Mon, 01 Mar 2010, Tue, 02 Mar 2010, Wed, 03 Mar 2010, Thu, 04 Mar 2010, Fri, 05 Mar 2010]
>> (ed..sd).to_a
=> []
as you can see, the range operator works properly form start to end, but not from end to start.
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