The following appears to work (it compiles :)):
#include <boost/tuple/tuple.hpp>
#include <boost/bind.hpp>
#include <vector>
#include <algorithm>
#include <cassert>
template<int N, class tuple_type> inline
typename boost::tuples::element<N, tuple_type>::type & get(tuple_type & t)
{
return boost::tuples::get<N>(t);
}
int main(const int argc, const char ** argv)
{
typedef boost::tuples::tuple<int, double> some_tuple;
std::vector<some_tuple> vec_of_some_tuples;
std::vector<some_tuple>::iterator result(std::find_if(vec_of_some_tuples.begin(), vec_of_some_tuples.end(), boost::bind(get<0, some_tuple>, ::_1) == 42));
assert(result != vec_of_some_tuples.end());
return 0;
}
Where 42 is the item you're looking for. See this post for original get():
http://lists.boost.org/boost-users/2007/01/24529.php
Otherwise, use a map?
Richard