1 files changed, 1 insertions, 5 deletions
diff --git a/src/maps/hmap.h b/src/maps/hmap.h
index a0824ec..38ea2e4 100644
--- a/src/maps/hmap.h
+++ b/src/maps/hmap.h
@@ -9,11 +9,6 @@
 
 using namespace std;
 
-// void add_elem( obj_type x, key_type k )       --> Insert x
-// void del_elem( key_type k )       --> Remove x
-// obj_type get_elem( key_type k )  --> Return item that matches x
-// void make_empty( )      --> Remove all items
-
 template <class obj_type, class key_type>
 class hmap
 {
@@ -77,6 +72,7 @@ public:
     virtual void make_empty( );
     virtual void make_empty( void (*func)(key_type) );
     virtual void del_elem ( const key_type &k );
+    virtual void rename_key ( const key_type &k1, const key_type &k2 );
     virtual obj_type set_elem ( const obj_type &x, const key_type &k );
 
     virtual void  run_func( void (*func)(obj_type) );