|  | Home | Libraries | People | FAQ | More | 
| Syntax | Code | 
|---|---|
| Pipe | 
                       | 
| Function | 
                       | 
value_type of the range is convertible
                to the argument type of pred.
              [x] in the returned range, pred(x)
                is true.
              pred might throw.
              boost::filtered_range<decltype(rng)>
              rng
                and Bidirectional
                Range
              
#include <boost/range/adaptor/filtered.hpp> #include <boost/range/algorithm/copy.hpp> #include <boost/assign.hpp> #include <iterator> #include <iostream> #include <vector> struct is_even { bool operator()( int x ) const { return x % 2 == 0; } }; int main(int argc, const char* argv[]) { using namespace boost::assign; using namespace boost::adaptors; std::vector<int> input; input += 1,2,3,4,5,6,7,8,9; boost::copy( input | filtered(is_even()), std::ostream_iterator<int>(std::cout, ",")); return 0; }
This would produce the output:
2,4,6,8,