[Boost-users] Multi Index with BOOST_AUTO question.

13 Oct 2009

      Hello all,I'm a newbie to multi-index. I ran into a strange problem with
VS2008. When using BOOST_AUTO with multi-index I'm getting compilation
errors (C2248) . Please see the following code.

*<snip>*
*
*
#include <iostream>
#include <string>
using namespace std ;

#include <boost/multi_index_container.hpp>
#include <boost/multi_index/mem_fun.hpp>
#include <boost/multi_index/ordered_index.hpp>
#include <boost/multi_index/identity.hpp>
#include <boost/multi_index/member.hpp>

#include <boost/foreach.hpp>
#include <boost/typeof/typeof.hpp>
using namespace boost ;
using namespace boost::multi_index ;

class Test
{
friend bool operator< (const Test& p_lhs, const Test& p_rhs)
{ return p_lhs._i < p_rhs._i ; }

friend ostream& operator << (ostream& os, const Test& p_test)
{
os << "Integer: " << p_test._i << "\tString: " << p_test._s ;
return os ;
}

private:
int _i ;
string _s ;

public:
Test (int i, string s): _i(i), _s(s) { }

string getString (void) const { return _s ; }
} ;

struct byNumber { } ;
struct byString { } ;

int main (void)
{
typedef
multi_index_container <Test, indexed_by <
ordered_unique<tag<byNumber>, identity <Test> >
, ordered_non_unique < tag<byString>, BOOST_MULTI_INDEX_CONST_MEM_FUN(Test,
string, getString) >
...
...
Container ;
typedef Container::index<byNumber>::type TestByNumber ;
typedef Container::index<byString>::type TestByString ;

Container c ;

c.insert (Test(5, "Surya")) ;
c.insert (Test(15, "Kiran")) ;

//TestByNumber& tests = c.get<byNumber>() ;
BOOST_AUTO(tests, c.get<byNumber>()) ;

BOOST_FOREACH (Test t, tests)
cout << t << endl ;

return 0 ;
}

*</snip>*
*
*
Compilation for this case fails with C2248. If I replace the BOOST_AUTO with
the previous line's statement, compilation goes well. This happens with
VS2008 only. with VS2005, there's no issue with BOOST_AUTO.

Am I missing something here?

Thanks,
Surya

[Boost-users] Multi Index with BOOST_AUTO question.

Surya Kiran Gullapalli