hmm haven't really tested it because i just dled boost lambda_tuple in the library but if it works than somehting like std::find_if(vec_of_some_tuples.begin(), vec_of_some_tuples.end(), boost::lambda::get<0>(boost::lambda::_1) == 5); On 8/13/07, David Abrahams <dave@boost-consulting.com> wrote:
on Mon Aug 13 2007, "Graham Reitz" <graham.cpp-AT-gmail.com> wrote:
typedef boost::tuples::tuple<int,double> some_tuple;
std::vector<some_tuple> vec_of_some_tuples;
// ... stuff some data into the vector
// ... search for a specific int in the vector of some_tuple
What would be a good method, using an stl algorithm, to search through the vector above to match only the int portion of the tuple (ignoring the double)?
Use std::find with a boost::transform_iterator over a function returning the first member of the tuple, then extract the resulting iterator's base() iterator.
HTH,
-- Dave Abrahams Boost Consulting http://www.boost-consulting.com
The Astoria Seminar ==> http://www.astoriaseminar.com
_______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users