class Date

# File lib/time_win/date_ext.rb, line 8
def days_in_month year, month
  case month
  when 1 then 31
  when 2 then leap?(year) ? 29 : 28
  when 3 then 31
  when 4 then 30
  when 5 then 31
  when 6 then 30
  when 7 then 31
  when 8 then 31
  when 9 then 30
  when 10 then 31
  when 11 then 30
  when 12 then 31
  else raise("Invalid month: #{month}")
  end
end

# File lib/time_win/date_ext.rb, line 4
def days_in_year year
  leap?(year) ? 366 : 365
end