Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. — Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

Header <boost/algorithm/cxx11/partition_copy.hpp>

Copy a subset of a sequence to a new sequence.

Marshall Clow

namespace boost {
  namespace algorithm {
    template<typename InputIterator, typename OutputIterator1, 
             typename OutputIterator2, typename UnaryPredicate> 
      BOOST_CXX14_CONSTEXPR std::pair< OutputIterator1, OutputIterator2 > 
      partition_copy(InputIterator, InputIterator, OutputIterator1, 
                     OutputIterator2, UnaryPredicate);
    template<typename Range, typename OutputIterator1, 
             typename OutputIterator2, typename UnaryPredicate> 
      BOOST_CXX14_CONSTEXPR std::pair< OutputIterator1, OutputIterator2 > 
      partition_copy(const Range &, OutputIterator1, OutputIterator2, 
                     UnaryPredicate);
  }
}