lib/dydx/algebra/set/num.rb in dydx-0.0.2 vs lib/dydx/algebra/set/num.rb in dydx-0.0.3

@@ -14,9 +14,13 @@
         alias_method :d, :differentiate
 
         def to_s
           @n.to_s
         end
+
+        def ==(x)
+          x.is_a?(Num) && n == x.n
+        end
       end
     end
   end
 end
\ No newline at end of file