Pastable version of Splitting array into defined sizes

<pre class='prettyprint' language='ruby'>def first_day_of_month(selected_date)
  selected_date.strftime('%Y-%m-01').to_date
end

def offset(selected_date)
  wday = first_day_of_month(selected_date).wday
  wday == 0 ? 6 : (wday - 1)
end

def start_date(selected_date)
 first_day_of_month(selected_date) - offset(selected_date)
end

def end_date(selected_date)
 (first_day_of_month(selected_date) - offset(selected_date)) + 41
end

def date_range_by_week(selected_date)
  date_range_by_week = []; date_range = []; 
  start_date(selected_date).upto(end_date(selected_date)) { |date| date_range &lt;&lt; date }
  until date_range.empty?
    week = []
    7.times do |i|
      week &lt;&lt; date_range.shift
    end
    date_range_by_week &lt;&lt; week
  end
  date_range_by_week
end

def calender_header
  puts &quot;

def highlight?(day, date)
  day == Date.today or day == date
end

def paint_calendar(date)
  calender_header
  date_range_by_week(date).each_with_index do |week, i|
    next if week[0].month &gt; date.month or week[0].year != date.year
    print &quot;.--week[##{week[0].strftime('%W')}]-----------------------------------------------------------------.\n| &quot;
    7.times do |i| 
      daystr = week[i].strftime('%b %d')
      spacer = highlight?(week[i], date) ? '==' : '  '
      print &quot;#{spacer}#{daystr}#{spacer}|&quot;
      print &quot;\n&quot; if i == 6
    end
  end
  puts &quot;+-----------------------------------------------------------------------------+&quot;
end</pre>
<pre class='prettyprint' language='ruby'># &gt;&gt; paint_calendar Date.today
# 
# 
# 
# 
# .-----------------------------------------------------------------------------,
# | monday    | tuesday  | wednesday| thursday | friday   | saturday | sunday   |
# .--week[#08]-----------------------------------------------------------------.
# |   Feb 23  |  Feb 24  |  Feb 25  |  Feb 26  |  Feb 27  |  Feb 28  |  Mar 01  |
# .--week[#09]-----------------------------------------------------------------.
# |   Mar 02  |  Mar 03  |  Mar 04  |  Mar 05  |  Mar 06  |  Mar 07  |  Mar 08  |
# .--week[#10]-----------------------------------------------------------------.
# |   Mar 09  |  Mar 10  |  Mar 11  |  Mar 12  |  Mar 13  |  Mar 14  |  Mar 15  |
# .--week[#11]-----------------------------------------------------------------.
# |   Mar 16  |  Mar 17  |  Mar 18  |  Mar 19  |  Mar 20  |  Mar 21  |  Mar 22  |
# .--week[#12]-----------------------------------------------------------------.
# |   Mar 23  |  Mar 24  |==Mar 25==|  Mar 26  |  Mar 27  |  Mar 28  |  Mar 29  |
# .--week[#13]-----------------------------------------------------------------.
# |   Mar 30  |  Mar 31  |  Apr 01  |  Apr 02  |  Apr 03  |  Apr 04  |  Apr 05  |
# +-----------------------------------------------------------------------------+
# =&gt; nil
# &gt;&gt;</pre>
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Pastable version of Splitting array into defined sizes