A Distributed Vertex List Graph is a graph whose vertices are
distributed across multiple processes or address spaces. The
`vertices` and `num_vertices` functions retain the same
signatures as in the Vertex List Graph concept, but return only
the local set (and size of the local set) of vertices.

- G
- A type that models the Distributed Vertex List Graph concept.
- g
- An object of type
`G`.

Vertex descriptor type | graph_traits<G>::vertex_descriptor |
Must model the Global Descriptor concept. |

Vertex iterator type | graph_traits<G>::vertex_iterator |
Iterates over vertices stored
locally. The value type must be
vertex_descriptor. |

Vertices size type | graph_traits<G>::vertices_size_type |
The unsigned integral type used to store the number of vertices in the local subgraph. |

Name | Expression | Type | Semantics |
---|---|---|---|

Local vertex set | vertices(g) |
std::pair<
vertex_iterator,
vertex_iterator> |
Returns an iterator range providing access to the local vertices in the graph. |

Number of local vertices. | num_vertices(g) |
vertices_size_type |
Returns the number of vertices stored locally in the graph. |

Copyright (C) 2005 The Trustees of Indiana University.

Authors: Douglas Gregor and Andrew Lumsdaine