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## Struct template droppable_accumulator_base

boost::accumulators::droppable_accumulator_base

## Synopsis

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

    template<typename Accumulator>
    struct droppable_accumulator_base : public Accumulator {

      // public member functions
      template<typename Args> droppable_accumulator_base(Args const &);
      droppable_accumulator_base(droppable_accumulator_base const &);
      template<typename Args> void operator()(Args const &);
      template<typename Args> void add_ref(Args const &);
      template<typename Args> void drop(Args const &);
      bool is_dropped() const;
    };

## Description

### `droppable_accumulator_base` public member functions

1.     template<typename Args> droppable_accumulator_base(Args const & args);

2.     droppable_accumulator_base(droppable_accumulator_base const & that);

3.     template<typename Args> void operator()(Args const & args);

4.     template<typename Args> void add_ref(Args const &);

5.     template<typename Args> void drop(Args const & args);

6.     bool is_dropped() const;