Re: [Boost-users] a vector of subgraphs

8 Apr 2009

      Ok, but it still won't work for me.

Let me rephrase my problem:

I have a certain Graph g and I must create several subgraphs from it.
In order to create a subgraph I must declare:

typedef subgraph Graph;
Graph g;

and to create the proper subgraphs from g it must be done:

Graph& g1 = g.subgraph();

where the subgraph method returns a Graph&.

The problem is that I must have "n" different subgraphs and I must
have a way to iterate through them. So ideally I should have:

vector< Graph& > subg;

subg.resize(n);
for (i=0;i
wrote:
...
Agree with James, shared_ptr can help here...
typedef subgraph 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-boun...@lists.boost.org [mailto:boost-users-
boun...@lists.boost.org] On Behalf Of fabricio
Sent: Wednesday, 8 April 2009 2:54 p.m.
To: boost-us...@lists.boost.org
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" 
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 subG;
or
        vector< boost::shared_ptr<Graph> > subG;
_______________________________________________
Boost-users mailing list
Boost-
us...@lists.boost.orghttp://lists.boost.org/mailman/listinfo.cgi/boost-
users

Boost-users mailing list
Boost-us...@lists.boost.org
http://lists.boost.org/mailman/listinfo.cgi/boost-users
* Scanned by MailMarshal - Marshal's comprehensive email content security solution. Download a free evaluation of MailMarshal atwww.marshal.com*
_______________________________________________
Boost-users mailing list
Boost-us...@lists.boost.orghttp://lists.boost.org/mailman/listinfo.cgi/boost-users