Changeset 570 for library/bdm/shared_ptr.h

Timestamp:

08/20/09 08:57:55 (15 years ago)

Author:

vbarta

Message:

supporting shared_ptr<const T>

Files:

• library/bdm/shared_ptr.h (modified) (1 diff)

library/bdm/shared_ptr.h

@@ -183 +183 @@
 
         /*!
+          \brief const cast
+
+          Shared pointer to T can be converted to shared pointer to
+          const T, just like T * can be converted to T const *.
+        */
+        template<typename U>
+        operator shared_ptr<const U>() const {
+                shared_ptr<const U> cptr;               
+                cptr.refCnt = refCnt;
+                cptr.payload = payload;
+                add_ref();
+                return cptr;
+        }
+
+        /*!
           \brief Efficient swap for shared_ptr.
          */