lib/maybe.rb in zx-monads-0.0.3 vs lib/maybe.rb in zx-monads-0.0.4

@@ -103,9 +103,16 @@
     block.call(None[@value])
 
     self
   end
 
+  def on(ontype, &block)
+    case ontype.to_sym
+    when :success then on_success(&block)
+    when :failure then on_failure(&block)
+    end
+  end
+
   class Some < Maybe
     def self.[](...)
       new(...)
     end
 
\ No newline at end of file