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

This is an older version of Boost and was released in 2024. The current version is 1.89.0.

uniqued

uniqued

uniqued example

Syntax	Code
Pipe	`rng \| boost::adaptors::uniqued`
Function	`boost::adaptors::unique(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: Forward Range
Range Return Type: boost::uniqued_range<decltype(rng)>
Returned Range Category: The minimum of the range concept of rng and Forward Range.

uniqued example

#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,