Re: [boost] How to manage Graph Property ?

Subject: Re: [boost] How to manage Graph Property ?
From: Jeremiah Willcock (jewillco_at_[hidden])
Date: 2010-04-15 17:03:33

On Thu, 15 Apr 2010, nguyen vu tri wrote:

> Hi everyone,
> I really need help to figure out the following problem.
> --------------------------------------------------------------------------------
> First, I create a Vertex Property:
> typedef property < vertex_index_t, int> VertexProperties;
>
> Then, I create an adjacency graph type:
> typedef adjacency_list < vecS, vecS, directedS, VertexProperties > Graph;
>
> Now I can call:
> VertexProperties V1;
>
> ---------------------------------------------------------------------------------
> My question is:
>          Is there anyway that I can access *VertexProperties *through *
> Graph* to create the same variable *V1* ?.

What would you need that for?  boost::property doesn't have any members -- 
it's just a tag saying which properties to generate.  Did you want the 
vertex_index property map instead?  In that case, do:

property_map<Graph, vertex_index_t> pm(get(vertex_index, g));

-- Jeremiah Willcock