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

From: Rene Meier (rene.meier_at_[hidden])
Date: 2005-08-05 03:59:46

Hello,

I would like to do some topology modification, depending on bundled properties of the vertices. So i use:
std::pair<vertex_iterator, vertex_iterator>
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<edge_descriptor, bool>
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?

Thanks,
Rene

-- 
René Meier
Institut für Pharmazeutische Chemie		
Martin-Luther-Universität Halle			email:	rene.meier_at_[hidden]
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