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#ifndef ATTRIBUTE_HPP
#define ATTRIBUTE_HPP
#include <vector>
#include <unordered_map>
enum attribute_op {
op_sum,
op_product,
op_mean,
op_concat,
op_comma,
op_max,
op_min,
};
struct accum_state {
double sum = 0;
double count = 0;
};
struct serial_val;
void set_attribute_accum(std::unordered_map<std::string, attribute_op> &attribute_accum, std::string name, std::string type);
void set_attribute_accum(std::unordered_map<std::string, attribute_op> &attribute_accum, const char *arg, char **argv);
void preserve_attribute(attribute_op const &op, const std::string &key, serial_val const &val, std::vector<std::string> &full_keys, std::vector<serial_val> &full_values, std::unordered_map<std::string, accum_state> &attribute_accum_state);
#endif
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