Re: [Boost-users] How to access a GRAPH property? - simple

Subject: Re: [Boost-users] How to access a GRAPH property? - simple
From: Jeremiah Willcock (jewillco_at_[hidden])
Date: 2010-08-15 14:19:02

On Sun, 15 Aug 2010, Caligula wrote:

> Thanks Cedric & Jeremiah,
> 
> I tried a bunch of stuff
> 
> Â  template < typename Graph >
> Â Â Â  void test_graph_property( Graph & g )
> Â  {
> 
> 
> Â Â Â Â Â Â Â  //get_property(graph_properties, bobo);
> Â Â Â Â Â Â Â  //g[graph_properties].bobo;
> Â Â Â Â Â Â Â  //g[graph_bundle].bobo;
> Â Â Â Â Â Â Â  //g[bobo];
> Â 
> Â Â Â Â Â Â Â  //get(bobo,g);
> Â Â Â Â Â Â Â  //get(g, graph_properties);
> Â Â Â Â Â Â Â  //cout << g[g].bobo << endl;
> Â 
> Â Â Â Â Â Â Â  //get_property(g.graph_properties, bobo);
> Â Â Â Â Â Â Â  get_property(g, bobo);
> 
> Â  }
> 
> But nothing works.
> For "get_property(g, bobo);"Â  I get
> Â 
> In function ‘void test_graph_property(Graph&)’:
> error: ‘bobo’ was not declared in this scope
> 
> 
> The doc pages you refered me to only mention property_maps, as far as I can tell.
> Maybe I need to declare a property_map such as
> 
> Â Â Â Â Â Â  property_map < graph_t, int >::type
> Â Â Â Â Â Â Â Â Â  capacity = get(bobo, g);
> 
> I would hope that I could avoid this using bundled properties.

You probably can, but bundled graph properties have only been in the Boost 
trunk for about a week and are not the 1.43 or 1.44 releases.  Otherwise, 
you will need to use old-style properties (you can define a single 
property that contains your struct of properties, though).

-- Jeremiah Willcock