optional.hpp: Allow easy access to contained type

cryptonomex · Feb 26, 2016 · 3841916 · 3841916
1 parent 83b4de0
commit 3841916
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/include/fc/optional.hpp b/include/fc/optional.hpp
@@ -18,9 +18,11 @@ namespace fc {
    *  fc::optional adds less than 400.
    */
   template<typename T>
-  class optional 
+  class optional
   {
     public:
+      typedef T value_type;
+
       optional():_valid(false){}
       ~optional(){ reset(); }