Re: [Boost-users] [graph] how do i test at compile time if a Graph is directed or undirected?

Subject: Re: [Boost-users] [graph] how do i test at compile time if a Graph is directed or undirected?
From: Christoph (c_p_at_[hidden])
Date: 2011-10-28 11:10:10

Ok, and how do i do the check?

if i have a template funktion 

template <class Ugraph>
foo (Ugraph &g)
{
//	boost::graph_traits <Ugraph>::directed_category =
boost::undirectedS ??
}

and i only want to have compiled foo without errors if and only if the 
Ugraph is an undirected graph, how do i inform the compiler?

best regards
christoph

On Fri, 2011-10-28 at 10:43 -0400, Jeremiah Willcock wrote:
> On Fri, 28 Oct 2011, Christoph wrote:
> 
> > Hi,
> >
> > ist it possible to test at compile time if a graph is directed or
> > undirected?
> > I would like the compiler to give an error message if the graph is
> > directed.
> 
> See directed_category in 
> <URL:http://www.boost.org/doc/libs/1_47_0/libs/graph/doc/Graph.html> for 
> the way to check.
> 
> -- Jeremiah Willcock
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> Boost-users mailing list
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-- 
Christoph <c_p_at_[hidden]>