option.rb in option-0.0.4

- old
+ new

@@ -34,10 +34,14 @@
 
   def or_nil
     get
   end
 
+  def defined?
+    true
+  end
+
   def empty?
     false
   end
 
   def map(&blk)
@@ -79,9 +83,13 @@
     nil
   end
 
   def or_nil
     nil
+  end
+
+  def defined?
+    false
   end
 
   def empty?
     true
   end