Changeset 732:33cbc0635e92 in lemon0.x for src/hugo/skeletons/graph.h
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 07/22/04 21:59:18 (17 years ago)
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 default
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 public
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 svn:c9d7d8f590d60310b91f818b3a526b0e/lemon/trunk@988
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src/hugo/skeletons/graph.h
r542 r732 7 7 8 8 #include <hugo/invalid.h> 9 #include <hugo/skeletons/maps.h> 9 10 10 11 /// The namespace of HugoLib 11 12 namespace hugo { 12 13 // @defgroup empty_graph The GraphSkeleton class 14 // @{ 15 16 /// An empty graph class. 17 18 /// This class provides all the common features of a graph structure, 19 /// however completely without implementations and real data structures 20 /// behind the interface. 21 /// All graph algorithms should compile with this class, but it will not 22 /// run properly, of course. 23 /// 24 /// It can be used for checking the interface compatibility, 25 /// or it can serve as a skeleton of a new graph structure. 26 /// 27 /// Also, you will find here the full documentation of a certain graph 28 /// feature, the documentation of a real graph imlementation 29 /// like @ref ListGraph or 30 /// @ref SmartGraph will just refer to this structure. 31 class GraphSkeleton 32 { 33 public: 34 /// Defalult constructor. 35 GraphSkeleton() {} 36 ///Copy consructor. 37 38 ///\todo It is not clear, what we expect from a copy constructor. 39 ///E.g. How to assign the nodes/edges to each other? What about maps? 40 GraphSkeleton(const GraphSkeleton &G) {} 41 42 /// The base type of the node iterators. 43 44 /// This is the base type of each node iterators, 45 /// thus each kind of node iterator will convert to this. 46 class Node { 47 public: 48 /// @warning The default constructor sets the iterator 49 /// to an undefined value. 50 Node() {} //FIXME 51 /// Invalid constructor \& conversion. 52 53 /// This constructor initializes the iterator to be invalid. 54 /// \sa Invalid for more details. 55 56 Node(Invalid) {} 57 //Node(const Node &) {} 58 59 /// Two iterators are equal if and only if they point to the 60 /// same object or both are invalid. 61 bool operator==(Node) const { return true; } 62 63 /// \sa \ref operator==(Node n) 64 /// 65 bool operator!=(Node) const { return true; } 66 67 bool operator<(Node) const { return true; } 68 }; 69 70 /// This iterator goes through each node. 71 72 /// This iterator goes through each node. 73 /// Its usage is quite simple, for example you can count the number 74 /// of nodes in graph \c G of type \c Graph like this: 75 /// \code 76 ///int count=0; 77 ///for(Graph::NodeIt n(G);G.valid(n);G.next(n)) count++; 78 /// \endcode 79 class NodeIt : public Node { 80 public: 81 /// @warning The default constructor sets the iterator 82 /// to an undefined value. 83 NodeIt() {} //FIXME 84 /// Invalid constructor \& conversion. 85 86 /// Initialize the iterator to be invalid 87 /// \sa Invalid for more details. 88 NodeIt(Invalid) {} 89 /// Sets the iterator to the first node of \c G. 90 NodeIt(const GraphSkeleton &) {} 91 /// @warning The default constructor sets the iterator 92 /// to an undefined value. 93 NodeIt(const NodeIt &n) : Node(n) {} 94 }; 95 96 97 /// The base type of the edge iterators. 98 class Edge { 99 public: 100 /// @warning The default constructor sets the iterator 101 /// to an undefined value. 102 Edge() {} //FIXME 103 /// Initialize the iterator to be invalid 104 Edge(Invalid) {} 105 /// Two iterators are equal if and only if they point to the 106 /// same object or both are invalid. 107 bool operator==(Edge) const { return true; } 108 bool operator!=(Edge) const { return true; } 109 bool operator<(Edge) const { return true; } 110 }; 111 112 /// This iterator goes trough the outgoing edges of a node. 113 114 /// This iterator goes trough the \e outgoing edges of a certain node 115 /// of a graph. 116 /// Its usage is quite simple, for example you can count the number 117 /// of outgoing edges of a node \c n 118 /// in graph \c G of type \c Graph as follows. 119 /// \code 120 ///int count=0; 121 ///for(Graph::OutEdgeIt e(G,n);G.valid(e);G.next(e)) count++; 122 /// \endcode 123 124 class OutEdgeIt : public Edge { 125 public: 126 /// @warning The default constructor sets the iterator 127 /// to an undefined value. 128 OutEdgeIt() {} 129 /// Initialize the iterator to be invalid 130 OutEdgeIt(Invalid) {} 131 /// This constructor sets the iterator to first outgoing edge. 132 133 /// This constructor set the iterator to the first outgoing edge of 134 /// node 135 ///@param n the node 136 ///@param G the graph 137 OutEdgeIt(const GraphSkeleton &, Node) {} 138 }; 139 140 /// This iterator goes trough the incoming edges of a node. 141 142 /// This iterator goes trough the \e incoming edges of a certain node 143 /// of a graph. 144 /// Its usage is quite simple, for example you can count the number 145 /// of outgoing edges of a node \c n 146 /// in graph \c G of type \c Graph as follows. 147 /// \code 148 ///int count=0; 149 ///for(Graph::InEdgeIt e(G,n);G.valid(e);G.next(e)) count++; 150 /// \endcode 151 152 class InEdgeIt : public Edge { 153 public: 154 /// @warning The default constructor sets the iterator 155 /// to an undefined value. 156 InEdgeIt() {} 157 /// Initialize the iterator to be invalid 158 InEdgeIt(Invalid) {} 159 InEdgeIt(const GraphSkeleton &, Node) {} 160 }; 161 // class SymEdgeIt : public Edge {}; 162 163 /// This iterator goes through each edge. 164 165 /// This iterator goes through each edge of a graph. 166 /// Its usage is quite simple, for example you can count the number 167 /// of edges in a graph \c G of type \c Graph as follows: 168 /// \code 169 ///int count=0; 170 ///for(Graph::EdgeIt e(G);G.valid(e);G.next(e)) count++; 171 /// \endcode 172 class EdgeIt : public Edge { 173 public: 174 /// @warning The default constructor sets the iterator 175 /// to an undefined value. 176 EdgeIt() {} 177 /// Initialize the iterator to be invalid 178 EdgeIt(Invalid) {} 179 EdgeIt(const GraphSkeleton &) {} 180 }; 181 182 /// First node of the graph. 183 184 /// \retval i the first node. 185 /// \return the first node. 13 namespace skeleton { 14 15 // @defgroup empty_graph The GraphSkeleton class 16 // @{ 17 18 /// An empty static graph class. 19 20 /// This class provides all the common features of a graph structure, 21 /// however completely without implementations and real data structures 22 /// behind the interface. 23 /// All graph algorithms should compile with this class, but it will not 24 /// run properly, of course. 186 25 /// 187 NodeIt &first(NodeIt &i) const { return i;} 188 189 /// The first incoming edge. 190 InEdgeIt &first(InEdgeIt &i, Node) const { return i;} 191 /// The first outgoing edge. 192 OutEdgeIt &first(OutEdgeIt &i, Node) const { return i;} 193 // SymEdgeIt &first(SymEdgeIt &, Node) const { return i;} 194 /// The first edge of the Graph. 195 EdgeIt &first(EdgeIt &i) const { return i;} 196 197 // Node getNext(Node) const {} 198 // InEdgeIt getNext(InEdgeIt) const {} 199 // OutEdgeIt getNext(OutEdgeIt) const {} 200 // //SymEdgeIt getNext(SymEdgeIt) const {} 201 // EdgeIt getNext(EdgeIt) const {} 202 203 /// Go to the next node. 204 NodeIt &next(NodeIt &i) const { return i;} 205 /// Go to the next incoming edge. 206 InEdgeIt &next(InEdgeIt &i) const { return i;} 207 /// Go to the next outgoing edge. 208 OutEdgeIt &next(OutEdgeIt &i) const { return i;} 209 //SymEdgeIt &next(SymEdgeIt &) const {} 210 /// Go to the next edge. 211 EdgeIt &next(EdgeIt &i) const { return i;} 212 213 ///Gives back the head node of an edge. 214 Node head(Edge) const { return INVALID; } 215 ///Gives back the tail node of an edge. 216 Node tail(Edge) const { return INVALID; } 217 218 // Node aNode(InEdgeIt) const {} 219 // Node aNode(OutEdgeIt) const {} 220 // Node aNode(SymEdgeIt) const {} 221 222 // Node bNode(InEdgeIt) const {} 223 // Node bNode(OutEdgeIt) const {} 224 // Node bNode(SymEdgeIt) const {} 225 226 /// Checks if a node iterator is valid 227 228 ///\todo Maybe, it would be better if iterator converted to 229 ///bool directly, as Jacint prefers. 230 bool valid(const Node&) const { return true;} 231 /// Checks if an edge iterator is valid 232 233 ///\todo Maybe, it would be better if iterator converted to 234 ///bool directly, as Jacint prefers. 235 bool valid(const Edge&) const { return true;} 236 237 ///Gives back the \e id of a node. 238 239 ///\warning Not all graph structures provide this feature. 240 /// 241 int id(const Node&) const { return 0;} 242 ///Gives back the \e id of an edge. 243 244 ///\warning Not all graph structures provide this feature. 245 /// 246 int id(const Edge&) const { return 0;} 247 248 //void setInvalid(Node &) const {}; 249 //void setInvalid(Edge &) const {}; 250 251 ///Add a new node to the graph. 252 253 /// \return the new node. 254 /// 255 Node addNode() { return INVALID;} 256 ///Add a new edge to the graph. 257 258 ///Add a new edge to the graph with tail node \c tail 259 ///and head node \c head. 260 ///\return the new edge. 261 Edge addEdge(Node, Node) { return INVALID;} 262 263 /// Resets the graph. 264 265 /// This function deletes all edges and nodes of the graph. 266 /// It also frees the memory allocated to store them. 267 void clear() {} 268 269 int nodeNum() const { return 0;} 270 int edgeNum() const { return 0;} 271 272 ///Read/write/reference map of the nodes to type \c T. 273 274 ///Read/write/reference map of the nodes to type \c T. 275 /// \sa MemoryMapSkeleton 276 /// \todo We may need copy constructor 277 /// \todo We may need conversion from other nodetype 278 /// \todo We may need operator= 279 /// \warning Making maps that can handle bool type (NodeMap<bool>) 280 /// needs extra attention! 281 282 template<class T> class NodeMap 26 /// It can be used for checking the interface compatibility, 27 /// or it can serve as a skeleton of a new graph structure. 28 /// 29 /// Also, you will find here the full documentation of a certain graph 30 /// feature, the documentation of a real graph imlementation 31 /// like @ref ListGraph or 32 /// @ref SmartGraph will just refer to this structure. 33 class StaticGraphSkeleton 283 34 { 284 35 public: 285 typedef T ValueType; 286 typedef Node KeyType; 287 288 NodeMap(const GraphSkeleton &) {} 289 NodeMap(const GraphSkeleton &, T) {} 290 291 template<typename TT> NodeMap(const NodeMap<TT> &) {} 292 293 /// Sets the value of a node. 294 295 /// Sets the value associated with node \c i to the value \c t. 36 /// Defalult constructor. 37 StaticGraphSkeleton() {} 38 ///Copy consructor. 39 40 ///\todo It is not clear, what we expect from a copy constructor. 41 ///E.g. How to assign the nodes/edges to each other? What about maps? 42 StaticGraphSkeleton(const StaticGraphSkeleton &G) {} 43 44 /// The base type of the node iterators. 45 46 /// This is the base type of each node iterators, 47 /// thus each kind of node iterator will convert to this. 48 class Node { 49 public: 50 /// @warning The default constructor sets the iterator 51 /// to an undefined value. 52 Node() {} //FIXME 53 /// Invalid constructor \& conversion. 54 55 /// This constructor initializes the iterator to be invalid. 56 /// \sa Invalid for more details. 57 58 Node(Invalid) {} 59 //Node(const Node &) {} 60 61 /// Two iterators are equal if and only if they point to the 62 /// same object or both are invalid. 63 bool operator==(Node) const { return true; } 64 65 /// \sa \ref operator==(Node n) 66 /// 67 bool operator!=(Node) const { return true; } 68 69 bool operator<(Node) const { return true; } 70 }; 71 72 /// This iterator goes through each node. 73 74 /// This iterator goes through each node. 75 /// Its usage is quite simple, for example you can count the number 76 /// of nodes in graph \c G of type \c Graph like this: 77 /// \code 78 ///int count=0; 79 ///for(Graph::NodeIt n(G);G.valid(n);G.next(n)) count++; 80 /// \endcode 81 class NodeIt : public Node { 82 public: 83 /// @warning The default constructor sets the iterator 84 /// to an undefined value. 85 NodeIt() {} //FIXME 86 /// Invalid constructor \& conversion. 87 88 /// Initialize the iterator to be invalid 89 /// \sa Invalid for more details. 90 NodeIt(Invalid) {} 91 /// Sets the iterator to the first node of \c G. 92 NodeIt(const StaticGraphSkeleton &) {} 93 /// @warning The default constructor sets the iterator 94 /// to an undefined value. 95 NodeIt(const NodeIt &n) : Node(n) {} 96 }; 97 98 99 /// The base type of the edge iterators. 100 class Edge { 101 public: 102 /// @warning The default constructor sets the iterator 103 /// to an undefined value. 104 Edge() {} //FIXME 105 /// Initialize the iterator to be invalid 106 Edge(Invalid) {} 107 /// Two iterators are equal if and only if they point to the 108 /// same object or both are invalid. 109 bool operator==(Edge) const { return true; } 110 bool operator!=(Edge) const { return true; } 111 bool operator<(Edge) const { return true; } 112 }; 113 114 /// This iterator goes trough the outgoing edges of a node. 115 116 /// This iterator goes trough the \e outgoing edges of a certain node 117 /// of a graph. 118 /// Its usage is quite simple, for example you can count the number 119 /// of outgoing edges of a node \c n 120 /// in graph \c G of type \c Graph as follows. 121 /// \code 122 ///int count=0; 123 ///for(Graph::OutEdgeIt e(G,n);G.valid(e);G.next(e)) count++; 124 /// \endcode 125 126 class OutEdgeIt : public Edge { 127 public: 128 /// @warning The default constructor sets the iterator 129 /// to an undefined value. 130 OutEdgeIt() {} 131 /// Initialize the iterator to be invalid 132 OutEdgeIt(Invalid) {} 133 /// This constructor sets the iterator to first outgoing edge. 134 135 /// This constructor set the iterator to the first outgoing edge of 136 /// node 137 ///@param n the node 138 ///@param G the graph 139 OutEdgeIt(const StaticGraphSkeleton &, Node) {} 140 }; 141 142 /// This iterator goes trough the incoming edges of a node. 143 144 /// This iterator goes trough the \e incoming edges of a certain node 145 /// of a graph. 146 /// Its usage is quite simple, for example you can count the number 147 /// of outgoing edges of a node \c n 148 /// in graph \c G of type \c Graph as follows. 149 /// \code 150 ///int count=0; 151 ///for(Graph::InEdgeIt e(G,n);G.valid(e);G.next(e)) count++; 152 /// \endcode 153 154 class InEdgeIt : public Edge { 155 public: 156 /// @warning The default constructor sets the iterator 157 /// to an undefined value. 158 InEdgeIt() {} 159 /// Initialize the iterator to be invalid 160 InEdgeIt(Invalid) {} 161 InEdgeIt(const StaticGraphSkeleton &, Node) {} 162 }; 163 // class SymEdgeIt : public Edge {}; 164 165 /// This iterator goes through each edge. 166 167 /// This iterator goes through each edge of a graph. 168 /// Its usage is quite simple, for example you can count the number 169 /// of edges in a graph \c G of type \c Graph as follows: 170 /// \code 171 ///int count=0; 172 ///for(Graph::EdgeIt e(G);G.valid(e);G.next(e)) count++; 173 /// \endcode 174 class EdgeIt : public Edge { 175 public: 176 /// @warning The default constructor sets the iterator 177 /// to an undefined value. 178 EdgeIt() {} 179 /// Initialize the iterator to be invalid 180 EdgeIt(Invalid) {} 181 EdgeIt(const StaticGraphSkeleton &) {} 182 }; 183 184 /// First node of the graph. 185 186 /// \retval i the first node. 187 /// \return the first node. 296 188 /// 297 void set(Node, T) {} 298 // Gets the value of a node. 299 //T get(Node i) const {return *(T*)0;} //FIXME: Is it necessary? 300 T &operator[](Node) {return *(T*)0;} 301 const T &operator[](Node) const {return *(T*)0;} 302 303 /// Updates the map if the graph has been changed 304 305 /// \todo Do we need this? 189 NodeIt &first(NodeIt &i) const { return i;} 190 191 /// The first incoming edge. 192 InEdgeIt &first(InEdgeIt &i, Node) const { return i;} 193 /// The first outgoing edge. 194 OutEdgeIt &first(OutEdgeIt &i, Node) const { return i;} 195 // SymEdgeIt &first(SymEdgeIt &, Node) const { return i;} 196 /// The first edge of the Graph. 197 EdgeIt &first(EdgeIt &i) const { return i;} 198 199 // Node getNext(Node) const {} 200 // InEdgeIt getNext(InEdgeIt) const {} 201 // OutEdgeIt getNext(OutEdgeIt) const {} 202 // //SymEdgeIt getNext(SymEdgeIt) const {} 203 // EdgeIt getNext(EdgeIt) const {} 204 205 /// Go to the next node. 206 NodeIt &next(NodeIt &i) const { return i;} 207 /// Go to the next incoming edge. 208 InEdgeIt &next(InEdgeIt &i) const { return i;} 209 /// Go to the next outgoing edge. 210 OutEdgeIt &next(OutEdgeIt &i) const { return i;} 211 //SymEdgeIt &next(SymEdgeIt &) const {} 212 /// Go to the next edge. 213 EdgeIt &next(EdgeIt &i) const { return i;} 214 215 ///Gives back the head node of an edge. 216 Node head(Edge) const { return INVALID; } 217 ///Gives back the tail node of an edge. 218 Node tail(Edge) const { return INVALID; } 219 220 // Node aNode(InEdgeIt) const {} 221 // Node aNode(OutEdgeIt) const {} 222 // Node aNode(SymEdgeIt) const {} 223 224 // Node bNode(InEdgeIt) const {} 225 // Node bNode(OutEdgeIt) const {} 226 // Node bNode(SymEdgeIt) const {} 227 228 /// Checks if a node iterator is valid 229 230 ///\todo Maybe, it would be better if iterator converted to 231 ///bool directly, as Jacint prefers. 232 bool valid(const Node&) const { return true;} 233 /// Checks if an edge iterator is valid 234 235 ///\todo Maybe, it would be better if iterator converted to 236 ///bool directly, as Jacint prefers. 237 bool valid(const Edge&) const { return true;} 238 239 ///Gives back the \e id of a node. 240 241 ///\warning Not all graph structures provide this feature. 306 242 /// 307 void update() {} 308 void update(T a) {} //FIXME: Is it necessary 243 int id(const Node&) const { return 0;} 244 ///Gives back the \e id of an edge. 245 246 ///\warning Not all graph structures provide this feature. 247 /// 248 int id(const Edge&) const { return 0;} 249 250 /// Resets the graph. 251 252 /// This function deletes all edges and nodes of the graph. 253 /// It also frees the memory allocated to store them. 254 void clear() {} 255 256 int nodeNum() const { return 0;} 257 int edgeNum() const { return 0;} 258 259 260 261 ///Reference map of the nodes to type \c T. 262 263 ///Reference map of the nodes to type \c T. 264 /// \sa ReferenceSkeleton 265 /// \warning Making maps that can handle bool type (NodeMap<bool>) 266 /// needs extra attention! 267 268 template<class T> class NodeMap 269 : public ReferenceMap< Node, T > 270 { 271 public: 272 273 class ReferenceMap<Node,T>; 274 275 NodeMap(const StaticGraphSkeleton &) {} 276 NodeMap(const StaticGraphSkeleton &, T) {} 277 278 ///Copy constructor 279 template<typename TT> NodeMap(const NodeMap<TT> &) {} 280 ///Assignment operator 281 template<typename TT> NodeMap &operator=(const NodeMap<TT> &) 282 {return *this;} 283 }; 284 285 ///Reference map of the edges to type \c T. 286 287 ///Reference map of the edges to type \c T. 288 /// \sa ReferenceSkeleton 289 /// \warning Making maps that can handle bool type (EdgeMap<bool>) 290 /// needs extra attention! 291 template<class T> class EdgeMap 292 : public ReferenceMap<Edge,T> 293 { 294 public: 295 typedef T ValueType; 296 typedef Edge KeyType; 297 298 EdgeMap(const StaticGraphSkeleton &) {} 299 EdgeMap(const StaticGraphSkeleton &, T ) {} 300 301 ///Copy constructor 302 template<typename TT> EdgeMap(const EdgeMap<TT> &) {} 303 ///Assignment operator 304 template<typename TT> EdgeMap &operator=(const EdgeMap<TT> &) 305 {return *this;} 306 }; 309 307 }; 310 308 311 ///Read/write/reference map of the edges to type \c T. 312 313 ///Read/write/reference map of the edges to type \c T. 314 ///It behaves exactly in the same way as \ref NodeMap. 315 /// \sa NodeMap 316 /// \sa MemoryMapSkeleton 317 /// \todo We may need copy constructor 318 /// \todo We may need conversion from other edgetype 319 /// \todo We may need operator= 320 template<class T> class EdgeMap 309 310 311 /// An empty graph class. 312 313 /// This class provides everything that \c StaticGraphSkeleton 314 /// with additional functionality which enables to build a 315 /// graph from scratch. 316 class GraphSkeleton : public StaticGraphSkeleton 321 317 { 322 318 public: 323 typedef T ValueType; 324 typedef Edge KeyType; 325 326 EdgeMap(const GraphSkeleton &) {} 327 EdgeMap(const GraphSkeleton &, T ) {} 328 329 ///\todo It can copy between different types. 319 /// Defalult constructor. 320 GraphSkeleton() {} 321 ///Copy consructor. 322 323 ///\todo It is not clear, what we expect from a copy constructor. 324 ///E.g. How to assign the nodes/edges to each other? What about maps? 325 GraphSkeleton(const GraphSkeleton &G) {} 326 327 ///Add a new node to the graph. 328 329 /// \return the new node. 330 330 /// 331 template<typename TT> EdgeMap(const EdgeMap<TT> &) {} 332 333 void set(Edge, T) {} 334 //T get(Edge) const {return *(T*)0;} 335 T &operator[](Edge) {return *(T*)0;} 336 const T &operator[](Edge) const {return *(T*)0;} 337 338 void update() {} 339 void update(T a) {} //FIXME: Is it necessary 331 Node addNode() { return INVALID;} 332 ///Add a new edge to the graph. 333 334 ///Add a new edge to the graph with tail node \c tail 335 ///and head node \c head. 336 ///\return the new edge. 337 Edge addEdge(Node, Node) { return INVALID;} 338 339 /// Resets the graph. 340 341 /// This function deletes all edges and nodes of the graph. 342 /// It also frees the memory allocated to store them. 343 /// \todo It might belong to \c EraseableGraphSkeleton. 344 void clear() {} 340 345 }; 341 }; 342 343 /// An empty eraseable graph class. 344 345 /// This class provides all the common features of an \e eraseable graph 346 /// structure, 347 /// however completely without implementations and real data structures 348 /// behind the interface. 349 /// All graph algorithms should compile with this class, but it will not 350 /// run properly, of course. 351 /// 352 /// \todo This blabla could be replaced by a sepatate description about 353 /// Skeletons. 354 /// 355 /// It can be used for checking the interface compatibility, 356 /// or it can serve as a skeleton of a new graph structure. 357 /// 358 /// Also, you will find here the full documentation of a certain graph 359 /// feature, the documentation of a real graph imlementation 360 /// like @ref ListGraph or 361 /// @ref SmartGraph will just refer to this structure. 362 class EraseableGraphSkeleton : public GraphSkeleton 363 { 364 public: 365 /// Deletes a node. 366 void erase(Node n) {} 367 /// Deletes an edge. 368 void erase(Edge e) {} 369 370 /// Defalult constructor. 371 EraseableGraphSkeleton() {} 372 ///Copy consructor. 373 EraseableGraphSkeleton(const GraphSkeleton &G) {} 374 }; 375 376 377 // @} 378 346 347 /// An empty eraseable graph class. 348 349 /// This class is an extension of \c GraphSkeleton. It also makes it 350 /// possible to erase edges or nodes. 351 class EraseableGraphSkeleton : public GraphSkeleton 352 { 353 public: 354 /// Deletes a node. 355 void erase(Node n) {} 356 /// Deletes an edge. 357 void erase(Edge e) {} 358 359 /// Defalult constructor. 360 EraseableGraphSkeleton() {} 361 ///Copy consructor. 362 EraseableGraphSkeleton(const GraphSkeleton &G) {} 363 }; 364 365 // @} 366 } //namespace skeleton 367 379 368 } //namespace hugo 380 369
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