From: "David A. Black" <dblack@...>
Date: 2005-04-26T03:20:21+09:00
Subject: Re: Days in month

Hi --

On Tue, 26 Apr 2005, Dan Fitzpatrick wrote:

> Is there a method of Date or Time that gives the number of days in a date's 
> month or the last day of the month like:
>
> d = Date.new(2005,4,20)
> d.days_in_month #-> 30
> #or
> d.last_day_of_month #-> 30

Funny you should ask :-)

This came up on IRC a month or two ago, and the answer appears to be
no.  So I wrote one:

# Date.dim -- days in month

require 'date'

class Date
   def dim
     d,m,y = mday,month,year
     d += 1 while Date.valid_civil?(y,m,d)
     d - 1
   end
end

if __FILE__ == $0
   puts (Date.today >> 1).dim
   puts (Date.today << 1).dim
   puts (Date.new(2004,2)).dim
end

__END__


David

-- 
David A. Black
dblack@wobblini.net