Boost C++ Libraries

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Header <boost/algorithm/gather.hpp>

namespace boost {
  namespace algorithm {

    // iterator-based gather implementation 
    template<typename BidirectionalIterator, typename Pred> 
      std::pair< BidirectionalIterator, BidirectionalIterator > 
      gather(BidirectionalIterator first, BidirectionalIterator last, 
             BidirectionalIterator pivot, Pred pred);

    // range-based gather implementation 
    template<typename BidirectionalRange, typename Pred> 
      std::pair< typename boost::range_iterator< const BidirectionalRange >::type, typename boost::range_iterator< const BidirectionalRange >::type > 
      gather(const BidirectionalRange & range, 
             typename boost::range_iterator< const BidirectionalRange >::type pivot, 
             Pred pred);
  }
}

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