Day Map

day_map.rb

module DayMap 
  day_array = []
  Date::DAYNAMES.each_with_index{|d, i| day_array << [d, i]}
  reverse_day_array = []
  Date::DAYNAMES.each_with_index{|d, i| reverse_day_array << [i, d]}

  DAY_MAP = Hash[day_array]
  REVERSE_MAP = Hash[reverse_day_array]

  class << self
    def day_for_int(i) 
      REVERSE_MAP[i.to_i]
    end 

    def int_for_day(day) 
      DAY_MAP[day.to_s.capitalize]
    end 
  end 
end