1.1 --- a/lemon/static_graph.h	Tue Sep 29 10:39:20 2009 +0200
     1.2 +++ b/lemon/static_graph.h	Tue Sep 29 13:03:34 2009 +0200
     1.3 @@ -92,12 +92,12 @@
     1.4      void firstIn(Arc& e, const Node& n) const { e.id = node_first_in[n.id]; }
     1.5      void nextIn(Arc& e) const { e.id = arc_next_in[e.id]; }
     1.6  
     1.7 -    int id(const Node& n) const { return n.id; }
     1.8 -    Node nodeFromId(int id) const { return Node(id); }
     1.9 +    static int id(const Node& n) { return n.id; }
    1.10 +    static Node nodeFromId(int id) { return Node(id); }
    1.11      int maxNodeId() const { return node_num - 1; }
    1.12  
    1.13 -    int id(const Arc& e) const { return e.id; }
    1.14 -    Arc arcFromId(int id) const { return Arc(id); }
    1.15 +    static int id(const Arc& e) { return e.id; }
    1.16 +    static Arc arcFromId(int id) { return Arc(id); }
    1.17      int maxArcId() const { return arc_num - 1; }
    1.18  
    1.19      typedef True NodeNumTag;
    1.20 @@ -268,25 +268,25 @@
    1.21      ///
    1.22      /// This function returns the node with the given index.
    1.23      /// \sa index()
    1.24 -    Node node(int ix) const { return Parent::nodeFromId(ix); }
    1.25 +    static Node node(int ix) { return Parent::nodeFromId(ix); }
    1.26  
    1.27      /// \brief The arc with the given index.
    1.28      ///
    1.29      /// This function returns the arc with the given index.
    1.30      /// \sa index()
    1.31 -    Arc arc(int ix) const { return Parent::arcFromId(ix); }
    1.32 +    static Arc arc(int ix) { return Parent::arcFromId(ix); }
    1.33  
    1.34      /// \brief The index of the given node.
    1.35      ///
    1.36      /// This function returns the index of the the given node.
    1.37      /// \sa node()
    1.38 -    int index(Node node) const { return Parent::id(node); }
    1.39 +    static int index(Node node) { return Parent::id(node); }
    1.40  
    1.41      /// \brief The index of the given arc.
    1.42      ///
    1.43      /// This function returns the index of the the given arc.
    1.44      /// \sa arc()
    1.45 -    int index(Arc arc) const { return Parent::id(arc); }
    1.46 +    static int index(Arc arc) { return Parent::id(arc); }
    1.47  
    1.48      /// \brief Number of nodes.
    1.49      ///