lib/graph/graph.rb~

   1 require 'ostruct'
   2
   3 module Graph
   4   class Graph < OpenStruct
   5     def initialize
   6       super
   7       self.edges = Array.new
   8       self.vertices = Array.new
   9     end
  10
  11     def <<(other)
  12       if other.class == Vertex
  13         self.vertices << other
  14       elsif
  15         self.edges << other
  16       end
  17       self
  18     end
  19   end
  20 end