1  module ActiveSupport #:nodoc:
   2    module CoreExtensions #:nodoc:
   3      module Range #:nodoc:
   4        # Check if Ranges overlap.
   5        module Overlaps
   6          # Compare two ranges and see if they overlap eachother
   7          #  (1..5).overlaps?(4..6) # => true
   8          #  (1..5).overlaps?(7..9) # => false
   9          def overlaps?(other)
  10            include?(other.first) || other.include?(first)
  11          end
  12        end
  13      end
  14    end
  15  end