Add week to Date and Time : DateTime « Date « Ruby

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Ruby » Date » DateTime

Add week to Date and Time





require 'date'



module Week

  def week

    (yday + 7 - wday) / 7

  end

end



class Date

  include Week

end



class Time

  include Week

end



saturday = DateTime.new(2005, 1, 1)

saturday.week                                    # => 0

(saturday+1).week                                # => 1   #Sunday, January 2

(saturday-1).week                                # => 52  #Friday, December 31

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