#include <set>
#include <cstdint>
#include <ctime>

struct readRecord
{
  uint32_t uid;

  int nReads;

  time_t when;

  bool programmed;

  static bool
  less (const readRecord a, const readRecord b)
  {
    return a.when < b.when;
  }
};


int
main (int argc, char **argv)
{
  std::set<readRecord> sorted;

  struct readRecord x = {1,2,3,true};

  sorted.insert (x);
}