[Boost-users] logical operators in lambda

Hi All I am trying to use boost::lambda using logicat operator. I would like to use it in a STL std::find_if call. What I receive is always the same error error: no match for ‘operator==’ in ‘boost::lambda::<unnamed>::_1 == 13’ Do you know what I am doing wrong? Thanks AFG using namespace boost::assign; int main( int argc, char** argv ){ std::vector< int > v; v += 12,13,14,15; bool found_tmp = false; boost::lambda::var_type< bool >::type found( boost::lambda::var(found_tmp) ); std::find_if( v.begin(), v.end(), ( found = ( boost::lambda::_1 == 13 ), return found ) ); }