[Boost-users] Can not compile 'adj_list_ra_edgelist.cpp'

From: yi zhang (zhangyi.zhangyi_at_[hidden])
Date: 2008-02-15 19:23:54

Hi, everyone

'adj_list_ra_edgelist.cpp' is a simple example of bgl, but I can not compile
it with gcc 3.4.4 on cygwin/windows xp. Following are the codes:

#include <boost/config.hpp>
> #include <iostream>
> #include <boost/graph/adjacency_list.hpp>
>
> int
> main()
> {
>   using namespace boost;
>   typedef adjacency_list<vecS, vecS, bidirectionalS, no_property,
>     property<int, edge_weight_t, property<int, edge_index_t> >,
>     no_property, vecS> Graph;
>
>   const std::size_t n = 3;
>   typedef std::pair<std::size_t, std::size_t> E;
>   E edge_array[] = { E(0,1), E(0,2), E(0,1) };
>   const std::size_t m = sizeof(edge_array) / sizeof(E);
>   Graph g(edge_array, edge_array + m, n);
>   for (std::size_t i = 0; i < m; ++i)
>     std::cout << edges(g).first[i] << " ";
>   std::cout << std::endl;
>
>   return 0;
> }

The error  is located  in  the line 28, i.e. edges(g).first[i]. I think
edges(g).first has the type of adjacency_list::edge_iterator. But how can I
understand 'edges(g).first[i]'?

Thanks,
Timothy Zhang