1 files changed, 15 insertions, 0 deletions

diff --git a/src/stable/hash.h b/src/stable/hash.h
index e461cf5..86f189e 100644
--- a/src/stable/hash.h
+++ b/src/stable/hash.h
@@ -1212,6 +1212,21 @@ namespace Bu
                         return !(*this == rhs);
                 }
 
+                MyType &operator+=( const MyType &rhs )
+                {
+                        if( this == &rhs )
+                                return *this;
+                        if( core == rhs.core )
+                                return *this;
+                        if( core == NULL || rhs.core == NULL )
+                                return *this;
+
+                        for( const_iterator i = rhs.begin(); i; i++ )
+                                insert( i.getKey(), i.getValue() );
+
+                        return *this;
+                }
+
         protected:
                 virtual Core *_copyCore( Core *src )
                 {