Re: [Boost-users] BGL: conversion from vertex_iterator to vertex_descriptor possible?

On Aug 5, 2005, at 3:59 AM, Rene Meier wrote:

Hello,

I would like to do some topology modification, depending on bundled properties of the vertices. So i use: std::pair vertices(const adjacency_list& g) to get an iterator range for all vertices, then i make a loop over all vertices, search for the properties, maybe i store the iterators of some vertices for later use, but the main problem is: I can not these iterators in functions like:

std::pair add_edge(vertex_descriptor u, vertex_descriptor v, adjacency_list& g)

void remove_vertex(vertex_descriptor u, adjacency_list& g)

void clear_vertex(vertex_descriptor u, adjacency_list& g)

and so on...

Thats why i would like to know how to convert an vertex_iterator to an vertex_descriptor?

Dereference the iterator to get the descriptor. So if you have vertex_iterator vi; then *vi is the vertex_descriptor it refers to. Doug