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## Struct template rolling_count_impl

boost::accumulators::impl::rolling_count_impl

## Synopsis

    // In header: <boost/accumulators/statistics_fwd.hpp>

    template<typename Sample>
    struct rolling_count_impl : public accumulator_base {

      // public member functions
      rolling_count_impl(dont_care);
      template<typename Args> result_type result(Args const &) const;
      template<typename Archive> void serialize(Archive &, const unsigned int);
    };

## Description

### `rolling_count_impl` public member functions

1.     rolling_count_impl(dont_care);

2.     template<typename Args> result_type result(Args const & args) const;

3.     template<typename Archive>
         void serialize(Archive & ar, const unsigned int file_version);