1.1 --- a/lemon/bits/clearable_graph_extender.h	Wed Nov 30 17:49:01 2005 +0000
     1.2 +++ b/lemon/bits/clearable_graph_extender.h	Thu Dec 01 15:08:46 2005 +0000
     1.3 @@ -26,6 +26,22 @@
     1.4    };
     1.5  
     1.6    template <typename _Base> 
     1.7 +  class ClearableEdgeSetExtender : public _Base {
     1.8 +  public:
     1.9 +
    1.10 +    typedef ClearableEdgeSetExtender Graph;
    1.11 +    typedef _Base Parent;
    1.12 +    typedef typename Parent::Node Node;
    1.13 +    typedef typename Parent::Edge Edge;
    1.14 +
    1.15 +    void clear() {
    1.16 +      Parent::getNotifier(Edge()).clear();
    1.17 +      Parent::clear();
    1.18 +    }
    1.19 +
    1.20 +  };
    1.21 +
    1.22 +  template <typename _Base> 
    1.23    class ClearableUndirGraphExtender : public _Base {
    1.24    public:
    1.25  
    1.26 @@ -41,6 +57,23 @@
    1.27        Parent::getNotifier(Edge()).clear();
    1.28        Parent::clear();
    1.29      }
    1.30 +  };
    1.31 +
    1.32 +  template <typename _Base> 
    1.33 +  class ClearableUndirEdgeSetExtender : public _Base {
    1.34 +  public:
    1.35 +
    1.36 +    typedef ClearableUndirEdgeSetExtender Graph;
    1.37 +    typedef _Base Parent;
    1.38 +    typedef typename Parent::Node Node;
    1.39 +    typedef typename Parent::UndirEdge UndirEdge;
    1.40 +    typedef typename Parent::Edge Edge;
    1.41 +
    1.42 +    void clear() {
    1.43 +      Parent::getNotifier(UndirEdge()).clear();
    1.44 +      Parent::getNotifier(Edge()).clear();
    1.45 +      Parent::clear();
    1.46 +    }
    1.47  
    1.48    };
    1.49