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179 EdgeIt(const GraphSkeleton &) {} |
179 EdgeIt(const GraphSkeleton &) {} |
180 }; |
180 }; |
181 |
181 |
182 /// First node of the graph. |
182 /// First node of the graph. |
183 |
183 |
184 /// \post \c i and the return value will be the first node. |
184 /// \retval i the first node. |
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185 /// \return the first node. |
185 /// |
186 /// |
186 NodeIt &first(NodeIt &i) const { return i;} |
187 NodeIt &first(NodeIt &i) const { return i;} |
187 |
188 |
188 /// The first incoming edge. |
189 /// The first incoming edge. |
189 InEdgeIt &first(InEdgeIt &i, Node n) const { return i;} |
190 InEdgeIt &first(InEdgeIt &i, Node n) const { return i;} |