Return the number of edges. */
| 470 | |
| 471 | /** Return the number of edges. */ |
| 472 | edges_size_type num_edges() const |
| 473 | { |
| 474 | edges_size_type n = 0; |
| 475 | std::pair<vertex_iterator, vertex_iterator> vit = vertices(); |
| 476 | for (vertex_iterator v = vit.first; v != vit.second; ++v) |
| 477 | n += out_degree(*v); |
| 478 | return n; |
| 479 | } |
| 480 | |
| 481 | /** Return the out degree of vertex u. */ |
| 482 | degree_size_type out_degree(vertex_descriptor u) const |
no test coverage detected