From: ara.t.howard@...
Date: 2006-04-07T23:40:38+09:00
Subject: Re: Newbie: dates by week and year

On Fri, 7 Apr 2006, Jeroen van Doorn wrote:

> Hi Everybody,
>
> Am a newbie to ruby, so forgive me if this is a stupid question,
>
> I'm looking for a way to get  a series of dates (monday - sunday or sunday - 
> saturday) , but I'm only having
> the year and the week number...
>
> Hopefully someone can help,
> Kind regards,
> Jeroen van Doorn

this ought to get you going:

     harp:~ > cat a.rb
     require 'date'

     def weekno year, week
       jjj = (7 * (week - 1)) + 1
       jd = Date.ordinal_to_jd year, jjj
       yyyy, m, d = Date.jd_to_civil jd
       a = Date.new yyyy, m, d
       b = Date.new yyyy, m, d + 7
       (a ... b)
     end

     first = weekno 2006, 1
     p first.map{|day| day.to_s}

     second = weekno 2006, 2
     p second.map{|day| day.to_s}

     third = weekno 2006, 3
     p third.map{|day| day.to_s}



     harp:~ > ruby a.rb
     ["2006-01-01", "2006-01-02", "2006-01-03", "2006-01-04", "2006-01-05", "2006-01-06", "2006-01-07"]
     ["2006-01-08", "2006-01-09", "2006-01-10", "2006-01-11", "2006-01-12", "2006-01-13", "2006-01-14"]
     ["2006-01-15", "2006-01-16", "2006-01-17", "2006-01-18", "2006-01-19", "2006-01-20", "2006-01-21"]


regards.

-a
-- 
be kind whenever possible... it is always possible.
- h.h. the 14th dali lama