berkeley-db

u_int32_t CarSize(const Car &car)			// (3)
{
  return sizeof(length) * 3 + model.length() + 1 + 
    sizeof(*engine); 					// (4)
}

void CopyCar(void *dest, const Car&car)			// (5)
{
  // Copy all bytes of the car object into memory chunk M 
  // referenced by dest.

berkeley-db

typedef dbstl::db_map<const char *, Car> owner_car_map_t;	// (1)
owner_car_map_t ocmap;

while (has more owner-car pairs to input) {
  // Accept input data for owner name and car, create car.
  cin>>owner>>len>>width>>height>>hp>>ncyl>>displ;

  Engine *pEngine = new Engine(hp, ncyl, displ);
  Car car(len, width, height, pEngine);
  ocmap[owner.c_str()] = car;					// (2)

berkeley-db

typedef std::map<const char *, Car> owner_car_map_t;	
owner_car_map_t ocmap;

while (has more owner-car pairs to input) {
  // Accept input data for owner name and car, create car.
  cin>>owner>>len>>width>>height>>hp>>ncyl>>displ;

  Engine *pEngine = new Engine(hp, ncyl, displ);
  Car car(len, width, height, pEngine);
  ocmap[owner.c_str()] = car;

berkeley-db

class Car {
  size_t length, width, height;
  Engine *engine;
  string model;

  // Member functions follow ...
};

class Engine {
  size_t horse_power;

berkeley-db

  for(dbl_vec_t::iterator itr = v1.begin(); itr != v1.end(); ++itr)
    *itr *= 2;

  for (int i = 0; i < v1.size(); i++)
    v1[i] += 3;

  v1.swap(v2); // Swap the vector's contents.
  v2 = v1; // Assign one vector to another.
  assert(v1 == v2);
  std::reverse(v1.begin(), v1.end());

berkeley-db

int vector_test(int, char**)
{
  typedef dbstl::db_vector <double, ElementHolder<double> > dbl_vec_t;
  DbEnv *penv = new DbEnv(DB_CXX_NO_EXCEPTIONS);		// (2)
  penv->open("dbenv", 
    flags | DB_CREATE | DB_INIT_MPOOL | DB_PRIVATE, 0777); 	// (3)
  pdb = dbstl::open_db(penv, "vector2.db", 
    DB_RECNO, DB_CREATE | dboflags, 0);				// (4)
  dbstl::register_db_env(penv);					// (5)
  dbstl::register_db(pdb);					// (6)

berkeley-db

int vector_test(int, char**)
{
  typedef std::vector<double> dbl_vec_t;    // (1)
  dbl_vec_t v1; // Empty vector of doubles. (1)
  v1.push_back(32.1);
  v1.push_back(40.5);
  // The rest follows ...

berkeley-db

int vector_test(int, char**)
{
  typedef dbstl::db_vector <double, ElementHolder<double> > dbl_vec_t; // (1)
  dbl_vec_t v1; // Empty vector of doubles. (1)
  v1.push_back(32.1);
  v1.push_back(40.5);
  // The rest follows ...

berkeley-db

#include "db_map.h" // Berkeley DB's STL Map support

using namespace dbstl;

main()
{
  std::string key = "hello";
  int value = 1234;
  Db *dbp = NULL;
  DbEnv *envp = NULL;