explicit operator bool() const noexcept

mapbox · Aug 27, 2014 · c77d98b · c77d98b
1 parent f4bcf3f
commit c77d98b
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/optional.hpp b/optional.hpp
@@ -30,10 +30,14 @@ namespace mapbox { namespace util {
             variant_ = v;
         }
 
-        bool operator!() const {
+        bool operator!() const noexcept{
             return variant_.template is<none_t>();
         }
 
+        explicit operator bool() const noexcept {
+            return variant_.template is<T>();
+        }
+
         T const& get() const {
             return variant_.template get<T>();
         }