added missing overload for value_or fo non-C++11 compilers

2015-03-10 07:14:36 +01:00
parent 6e40825098
commit 15d9fcdbd1
1 changed files with 9 additions and 0 deletions
--- a/include/boost/optional/optional.hpp
+++ b/include/boost/optional/optional.hpp
@ -1106,6 +1106,15 @@ class optional : public optional_detail::optional_base<T>
        else
          return v;
      }
+      
+    template <class U>
+    value_type value_or ( U& v ) const 
+      { 
+        if (this->is_initialized())
+          return get();
+        else
+          return v;
+      }
 #endif