Re: [Boost-users] a vector of subgraphs

Subject: Re: [Boost-users] a vector of subgraphs
From: Damian Coventry (Damian.Coventry_at_[hidden])
Date: 2009-04-07 23:57:00

Agree with James, shared_ptr can help here...

typedef subgraph<adjacency_list> Graph;
typedef shared_ptr<Graph> GraphPtr;
typedef vector<GraphPtr> Graphs;

Graphs graphs;
graphs.push_back(GraphPtr(new Graph));

or perhaps

Graphs graphs;
graphs.resize(2);

graphs[1].reset(new Graph);
graphs[1]->DoStuff();

graphs[0] = GraphPtr(new Graph);
graphs[0]->DoStuff();

~Damian();

> -----Original Message-----
> From: boost-users-bounces_at_[hidden] [mailto:boost-users-
> bounces_at_[hidden]] On Behalf Of fabricio
> Sent: Wednesday, 8 April 2009 2:54 p.m.
> To: boost-users_at_[hidden]
> Subject: Re: [Boost-users] a vector of subgraphs
> 
> oh sorry, forgot to mention, after
> 
> vector< Graph& > subG;
> 
> I should have something like:
> 
> subG.resize(2);
> subG(0) = G.subgraph();
> 
> and subgraph() returns a Graph&
> 
> On 7 abr, 21:04, "James C. Sutherland" <James.Sutherl..._at_[hidden]>
> wrote:
> > On Apr 7, 2009, at 4:59 PM, fabricio wrote:
> >
> >
> >
> > > typedef subgraph< adjacency_list > Graph;
> >
> > > Graph G;
> >
> > > what I want is to create a:
> >
> > > vector< Graph& > subG;
> >
> > > but the usage of & here is illegal.
> >
> > Why not use pointers?
> >         vector<Graph*> subG;
> > or
> >         vector< boost::shared_ptr<Graph> > subG;
> > _______________________________________________
> > Boost-users mailing list
> > Boost-
> us..._at_[hidden]http://lists.boost.org/mailman/listinfo.cgi/boost-
> users
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