why ruby does not have 15.minutes method? rails seem does
because rails defines it
is there any way to get Time.now-15.minutes with ruby?
Time.now-15*60
=> Thu May 31 09:52:34 -0700 2012
minus the number of seconds
>> a=Time.now
=> Mon Jun 11 19:40:57 -0700 2012
>> a-15*60 (seconds)
=> Mon Jun 11 19:25:57 -0700 2012
>> a=DateTime.now
=> Mon, 11 Jun 2012 19:41:09 -0700
>> a-15*60 (days)
=> Thu, 24 Dec 2009 19:41:09 -0700
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