Newbie: dates by week and year

ruby-talk
1

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

2

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

http://www.rubycentral.com/book/ref_c_time.html#Time.strftime

3

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

···

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

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

4

Thanks for the answer!

This one really gave me a headache ...

Kind regards,
Jeroen van Doorn

···

ara.t.howard@noaa.gov wrote:

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