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value_type of the range is comparable
                with operator==().
              [x,y] in the returned range, x==y is false.
              boost::uniqued_range<decltype(rng)>
              rng
                and Forward Range.
              
#include <boost/range/adaptor/uniqued.hpp> #include <boost/range/algorithm/copy.hpp> #include <boost/assign.hpp> #include <iterator> #include <iostream> #include <vector> int main(int argc, const char* argv[]) { using namespace boost::assign; using namespace boost::adaptors; std::vector<int> input; input += 1,1,2,2,2,3,4,5,6; boost::copy( input | uniqued, std::ostream_iterator<int>(std::cout, ",")); return 0; }
This would produce the output:
1,2,3,4,5,6,