# module ActiveSupport #:nodoc:
#   module CoreExtensions #:nodoc:
#     module Numeric #:nodoc:
#       # Enables the use of time calculations and declarations, like 45.minutes + 2.hours + 4.years.
#       #
#       # These methods use Time#advance for precise date calculations when using from_now, ago, etc. 
#       # as well as adding or subtracting their results from a Time object. For example:
#       #
#       #   # equivalent to Time.now.advance(:months => 1)
#       #   1.month.from_now
#       #
#       #   # equivalent to Time.now.advance(:years => 2)
#       #   2.years.from_now
#       #
#       #   # equivalent to Time.now.advance(:months => 4, :years => 5)
#       #   (4.months + 5.years).from_now
#       # 
#       # While these methods provide precise calculation when used as in the examples above, care
#       # should be taken to note that this is not true if the result of `months', `years', etc is
#       # converted before use:
#       #
#       #   # equivalent to 30.days.to_i.from_now
#       #   1.month.to_i.from_now
#       #
#       #   # equivalent to 365.25.days.to_f.from_now
#       #   1.year.to_f.from_now
#       #
#       # In such cases, Ruby's core 
#       # Date[http://stdlib.rubyonrails.org/libdoc/date/rdoc/index.html] and 
#       # Time[http://stdlib.rubyonrails.org/libdoc/time/rdoc/index.html] should be used for precision
#       # date and time arithmetic
#       module Time
#         def seconds
#           ActiveSupport::Duration.new(self, [[:seconds, self]])
#         end
#         alias :second :seconds
# 
#         def minutes
#           ActiveSupport::Duration.new(self * 60, [[:seconds, self * 60]])
#         end
#         alias :minute :minutes  
#         
#         def hours
#           ActiveSupport::Duration.new(self * 3600, [[:seconds, self * 3600]])
#         end
#         alias :hour :hours
#         
#         def days
#           ActiveSupport::Duration.new(self * 24.hours, [[:days, self]])
#         end
#         alias :day :days
# 
#         def weeks
#           ActiveSupport::Duration.new(self * 7.days, [[:days, self * 7]])
#         end
#         alias :week :weeks
#         
#         def fortnights
#           ActiveSupport::Duration.new(self * 2.weeks, [[:days, self * 14]])
#         end
#         alias :fortnight :fortnights
#         
#         # Reads best without arguments:  10.minutes.ago
#         def ago(time = ::Time.now)
#           time - self
#         end
# 
#         # Reads best with argument:  10.minutes.until(time)
#         alias :until :ago
# 
#         # Reads best with argument:  10.minutes.since(time)
#         def since(time = ::Time.now)
#           time + self
#         end
# 
#         # Reads best without arguments:  10.minutes.from_now
#         alias :from_now :since
#       end
#     end
#   end
# end
# 
# class Numeric #:nodoc:
#   include ActiveSupport::CoreExtensions::Numeric::Time 
# end