adjacent_filtered

adjacent_filtered example

Syntax	Code
Pipe	`rng \| boost::adaptors::adjacent_filtered(bi_pred)`
Function	`boost::adaptors::adjacent_filter(rng, bi_pred)`

Precondition: The value_type of the range is convertible to both argument types of bi_pred.
Postcondition: For all adjacent elements [x,y] in the returned range, bi_pred(x,y) is true.
Throws: Whatever the copy constructor of bi_pred might throw.
Range Category: Forward Range
Return Type: boost::adjacent_filtered_range<decltype(rng), decltype(bi_pred)>
Returned Range Category: The minimum of the range category of rng and Forward Range

adjacent_filtered example

#include <boost/range/adaptor/adjacent_filtered.hpp>
#include <boost/range/algorithm/copy.hpp>
#include <boost/assign.hpp>
#include <iterator>
#include <functional>
#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 | adjacent_filtered(std::not_equal_to<int>()),
        std::ostream_iterator<int>(std::cout, ","));

    return 0;
}

This would produce the output:

1,2,3,4,5,6,

Boost C++ Libraries

adjacent_filtered

adjacent_filtered example