lib/hamster/stack.rb in hamster-0.3.3 vs lib/hamster/stack.rb in hamster-0.3.4

@@ -49,12 +49,10 @@
     def clear
       EmptyStack
     end
 
     def eql?(other)
-      return true if other.equal?(self)
-      return false unless other.class.equal?(self.class)
-      @list.eql?(other.instance_eval{@list})
+      instance_of?(other.class) && @list.eql?(other.instance_variable_get(:@list))
     end
     def_delegator :self, :eql?, :==
 
     def to_a
       @list.to_a