From: Robert Klemme <bob.news@...>
Date: 2004-07-30T17:51:43+09:00
Subject: Re: Time checking, efficient?


"Phano" <beast@linuxmail.org> schrieb im Newsbeitrag
news:lKnOc.99670$dP1.342027@newsc.telia.net...
> --- copy ---
> module Strict
> class StrictError < Exception
> end
>
> class TimeCheck < Time
> def TimeCheck.gm( *args )
> month = args[1] || 1
> time = Time.gm( *args )
> raise StrictError.new('Days out of range') if time.month != month
> time
> end
> end
> end
> --- end ---
>
> I want to check if a Time is in the right boundraries more strictly than
the
> Time class already does.
> Time.gm( 2004,2,30 ) -> Mon Mar 01 00:00:00 UTC 2004
> Time*Check.gm( 2004,2,30 ) -> StrictError
>
> Would the above module be efficient or could this be done in another
way?

Some remarks: you don't need to inherit Time.  I'd do probably

def Time.gm_checked( year, month=1, day=1, hour=0, min=0, sec=0, usec=0)
  gmt = Time.gm( year, month, day, hour, min, sec, usec )
  raise ArgumentError, 'Value out of range' unless gmt.year == year &&
     gmt.month == month &&
     gmt.day   == day &&
     gmt.hour  == hour &&
     gmt.min   == min &&
     gmt.sec   == sec &&
     gmt.usec  == usec
  gmt
end

But probably month is sufficient since Time.gm will take care of other
violations.

    robert