# Boost.Range

## Range Adaptors

#### `uniqued`

>     rng | boost::adaptors::uniqued

>     boost::make_uniqued_range( rng )

- Precondition: The value-type of the range is comparable with `operator==()`.
- Postcondition: For all adjacent elements `[x,y]` in the returned range, `x==y` is false.
- Range Category: ForwardRange

### Example

        #include <boost/range/adaptor/uniqued.hpp>
        #include <boost/range/algorithm/copy.hpp>
        #include <boost/assign.hpp>
        #include <algorithm>
        #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`

(C) Copyright Neil Groves 2009 (C) Copyright Thorsten Ottosen 2003-2004